Community Bank of Trenton v. Schnuck Markets, Incorporated ( 2018 )


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  •                                  In the
    United States Court of Appeals
    For the Seventh Circuit
    ____________________
    No. 17-2146
    COMMUNITY BANK OF TRENTON, et al.,
    Plaintiffs-Appellants,
    v.
    SCHNUCK MARKETS, INC.,
    Defendant-Appellee.
    ____________________
    Appeal from the United States District Court for the
    Southern District of Illinois.
    No. 15-cv-1125 — Michael J. Reagan, Chief Judge.
    ____________________
    ARGUED JANUARY 10, 2018 — DECIDED APRIL 11, 2018
    ____________________
    Before WOOD, Chief Judge, HAMILTON, Circuit Judge, and
    BUCKLO, District Judge. *
    HAMILTON, Circuit Judge. In late 2012, hackers infiltrated
    the computer networks at Schnuck Markets, a large
    Midwestern grocery store chain based in Missouri and known
    as “Schnucks.” The hackers stole the data of about 2.4 million
    *
    The Honorable Elaine E. Bucklo, United States District Judge for the
    Northern District of Illinois, sitting by designation.
    2                                                  No. 17-2146
    credit and debit cards. By the time the intrusion was detected
    and the data breach was announced in March 2013, the
    financial losses from unauthorized purchases and cash
    withdrawals had reached into the millions. Litigation ensued.
    Like many other recent cases around the country, this case
    involves a massive consumer data breach. See, e.g., Lewert v.
    P.F. Chang’s China Bistro, Inc., 
    819 F.3d 963
    (7th Cir. 2016);
    Remijas v. Neiman Marcus Group, LLC, 
    794 F.3d 688
    (7th Cir.
    2015). Unlike most other data-breach cases, however, the
    proposed class of plaintiffs in this case is comprised not of
    consumers but of financial institutions. Card-issuing banks
    and credit unions are required by federal law to indemnify
    their card-holding customers for losses from fraudulent
    activity, so our four plaintiff-appellant banks here bore the
    costs of reissuing cards and indemnifying the Schnucks
    hackers’ fraud. See 15 U.S.C. § 1643(a) (limiting credit-card-
    holder liability for unauthorized use); 12 C.F.R. § 205.6
    (limiting debit-card-holder liability for unauthorized use).
    The Article III standing and injury issues that arose in Lewert,
    Remijas, and many other data-breach cases with consumer
    plaintiffs are not issues in this case.
    The principal issues in this case present fairly new
    variations on the economic loss rule in tort law. The central
    issue is whether Illinois or Missouri tort law offers a remedy
    to card-holders’ banks against a retail merchant who suffered
    a data breach, above and beyond the remedies provided by
    the network of contracts that link merchants, card-processors,
    banks, and card brands to enable electronic card payments.
    The plaintiff banks assert claims under the common law as
    well as Illinois consumer protection statutes. Our role as a
    federal court applying state law is to predict how the states’
    No. 17-2146                                                  3
    supreme courts would likely resolve these issues. We predict
    that both states would reject the plaintiff banks’ search for a
    remedy beyond those established under the applicable
    networks of contracts. Accordingly, we affirm the district
    court’s dismissal of the banks’ complaint.
    I. Factual Background and Procedural History
    A. Today’s Electronic Payment Card System
    When a customer uses a credit or debit card at a retail
    store, the merchant collects the customer’s information. This
    includes the card-holder’s name and account number, the
    card’s expiration date and security code, and, in the case of a
    debit card, the personal identification number. Collectively,
    this payment card information is known as “track data.” At
    the time of purchase, the track data and the amount of the
    intended purchase are forwarded electronically to the
    merchant’s bank (the “acquiring bank”), usually through a
    payment processing company. The acquiring bank then
    requests payment from the customer’s bank (the “issuing
    bank”) through the relevant card network—in this case, Visa
    or MasterCard. If the issuing bank approves the purchase, the
    transaction goes through within seconds. The customer’s
    issuing bank then pays the merchant’s acquiring bank the
    amount of the customer’s purchase, which is credited to the
    merchant’s account, minus processing fees. Contracts govern
    all of these relationships, although typically no contracts
    directly link the merchant (e.g., Schnucks) with the issuing
    banks (our four plaintiffs here). Here is a simplified diagram
    of this series of relationships:
    4                                                         No. 17-2146
    The Card Payment System
    Card Network
    e.g., Visa,
    MasterCard
    Acquiring                                   Issuing Bank
    Bank                                      e.g., Community
    e.g., Citicorp                             Bank of Trenton
    Retail                                         Retail
    Merchant                                       Customer
    e.g., Schnucks
    In this case, Schnucks routed customer track data through
    a payment processor, First Data Merchant Services, to its
    acquiring bank, Citicorp. Citicorp then routed customer track
    data through the card networks to the issuing banks
    (plaintiffs here), who approved purchases and later collected
    payments from their customers, the card-holders. This web of
    contractual relationships facilitates the dotted line above: the
    familiar retail purchase by a customer from a merchant.
    Because Schnucks was the weak security link in this regime,
    the plaintiff banks seek to recover directly from Schnucks
    itself, a proposed line of liability represented by the dashed
    line above. This new form of liability would be in addition to
    the remedies already provided by the contracts governing the
    card payment systems.
    No. 17-2146                                                         5
    B. The Contracts that Enable the Card Payment System
    All parties in the card payment system agree to take on
    certain responsibilities and to subject themselves to specified
    contractual remedies. In joining the card payment system,
    issuing banks—including our plaintiffs here—agree to
    indemnify their customers in the event that a data breach
    anywhere in the network results in unauthorized
    transactions. 1 Visa requires issuers to “limit the Cardholder’s
    liability to zero” when a customer timely notifies them of
    unauthorized transactions. Appellee App. at 99–100
    (§ 4.1.13.3). MasterCard has the same requirement. 
    Id. at 107
    (§ 6.3).
    For their parts, acquiring banks and their agents must
    abide by data security requirements. 
    Id. at 102.
    As a merchant,
    Schnucks also agreed to abide by data security requirements
    in the contracts linking it to the card payment system. 
    Id. at 54,
    58, 70–72, 73. These data security rules are called the
    Payment Card Industry Data Security Standards or “PCI
    DSS.” In their contracts, Schnucks, its bank, and its data
    processor effectively agreed to share resulting liabilities from
    any data breaches. 
    Id. at 53–54,
    70–71, 73 (Master Services
    Agreement §§ 4, 5.4; Bankcard Addendum §§ 23, 25, 28); see
    also Schnuck Markets, Inc. v. First Data Merchant Services Corp.,
    
    852 F.3d 732
    , 735, 737–39 (8th Cir. 2017) (“First Data”)
    (interpreting § 5.4 in light of this data breach at Schnucks). As
    we explain below, the specific details of these contractual
    1  This contractual duty goes beyond the federal law requirement to
    limit customer liability in the event of a data breach. See 15 U.S.C.
    § 1643(a); 12 C.F.R. § 205.6.
    6                                                              No. 17-2146
    remedies do not matter here. What is important is that they
    exist at all, by agreements among the interested parties.
    When a retailer or other party in the card payment system
    suffers a data breach, issuing banks must bear the cost, at least
    initially, of indemnifying their customers for unauthorized
    transactions and issuing new cards. The contracts that govern
    both the Visa and MasterCard networks then provide a cost
    recovery process that allows issuing banks to seek
    reimbursement for at least some of these losses. See Appellee
    App. at 102 (Visa), 110 (MasterCard). Schnucks agreed to
    follow card network “compliance requirements” for data
    security and to pay “fines” for noncompliance. 
    Id. at 70.
    Our
    colleagues in the Eighth Circuit later read Schnucks’ contract
    with its data processor and acquiring bank to include
    significant limits on Schnucks’ share of the liability for losses
    of issuing banks. See First 
    Data, 852 F.3d at 736
    , 737–39
    (holding that contractual limit on liability favoring Schnucks
    applied to limit liabilities resulting from this data breach). 2
    2 We can properly consider the remedies provided in the card brand
    rules and Schnucks’ contractual agreements. A court deciding a motion to
    dismiss under Rule 12(b)(6) may consider documents that are attached to
    a complaint or that are central to the complaint, even if not physically
    attached to it. Tierney v. Vahle, 
    304 F.3d 734
    , 738 (7th Cir. 2002) (discussing
    Rules 12(b)(6) and 10(c)); see also, e.g., Mueller v. Apple Leisure Corp., 
    880 F.3d 890
    , 895 (7th Cir. 2018) (affirming dismissal of contract claims); Hecker
    v. Deere & Co., 
    556 F.3d 575
    , 578, 582–83 (7th Cir. 2009) (affirming dismissal
    of ERISA claims). Moreover, even the plaintiff banks say they want the
    court to consider these contracts “as to the liability issues” because they
    establish “the data protection and reporting standards to which Schnucks
    agreed to be bound.” Reply Br. at 4. We cannot consider in isolation just
    those contractual provisions that plaintiffs find helpful. See Minnesota Life
    Insurance Co. v. Kagan, 
    724 F.3d 843
    , 850–51 (7th Cir. 2013). The substance
    of contracts among members of the card payment system is important in
    No. 17-2146                                                                7
    C. The Schnucks Data Breach and Response
    In early December 2012, hackers gained access to
    Schnucks’ computer network in Missouri and installed
    malicious software (known as “malware”) on its system. This
    malware harvested track data from the Schnucks system
    while payment transactions were being processed. As soon as
    payment cards were swiped at a Schnucks store and the
    unencrypted payment card information went from the card
    reader into the Schnucks system for payment, customer
    information was available for harvesting. The breach affected
    79 of Schnucks’ 100 stores in the Midwest, many of which are
    located in Missouri and Illinois, the states whose laws we
    consider here.
    For the next four months, hackers harvested and sold
    customer track data, which were used to create counterfeit
    cards and to make unauthorized cash withdrawals, including
    from the plaintiff banks. Schnucks says it did not learn of the
    breach until March 14, 2013, when it heard from its card
    payment processor. A few days later, an outside consultant
    quickly identified the source of the problem. On March 30,
    Schnucks issued a press release announcing the data breach.
    The plaintiff banks estimate that for every day the data
    breach continued, approximately 20,000 cards may have been
    deciding whether to impose tort liability on top of existing contractual
    remedies. Cf. Lone Star Nat’l Bank, N.A. v. Heartland Payment Systems, Inc.,
    
    729 F.3d 421
    , 426 (5th Cir. 2013) (reversing dismissal of issuing banks’ tort
    claims against payment processor; record was uncertain as to contractual
    remedies). From the contracts in our record, we know that the issuing
    banks (plaintiffs here), the specific acquiring bank (Citicorp), and the
    breached retail merchant (Schnucks) are all voluntarily part of the card
    payment systems and subject to their rules and remedies.
    8                                                       No. 17-2146
    compromised. This means around 2.4 million cards in total
    were at risk from the Schnucks breach. Given this rate,
    plaintiffs estimate that more than 300,000 cards may have
    been compromised between March 14 and March 30, after
    Schnucks knew that security had been breached but before it
    announced that fact publicly. The plaintiff banks allege that
    numerous security steps could have prevented the breach and
    that those steps are required by the card network rules. 3 In
    fact, under the networks’ contractual provisions, the card
    networks later assessed over $1.5 million in reimbursement
    charges and fees against Schnucks, which eventually split that
    liability with its card processor and acquiring bank. Brief for
    Appellants at 4, First Data, 
    852 F.3d 732
    (8th Cir. 2017) (No. 15-
    3804), 
    2016 WL 284697
    , at *4; see also First 
    Data, 852 F.3d at 735
    –36 (describing card networks’ expectations, assessments,
    and resulting litigation).
    D. The Banks’ Lawsuit
    The plaintiff banks, which may or may not have received
    some of those reimbursement funds, filed a lawsuit in 2014
    seeking to be made whole directly by Schnucks. The banks
    dismissed their first complaint voluntarily and then filed this
    action in the Southern District of Illinois in October 2015. They
    amended their complaint in October 2016. The banks contend
    that despite the existence of the contractual remedies, issuing
    banks “cannot always recoup the reimbursed fraudulent
    charges” and must pay other fees and bear card reissuing
    3  These steps include installing appropriate antivirus software,
    complying with network segmentation and firewall standards, encrypting
    sensitive payment data, tracking and monitoring all access to payment
    information, and implementing two-factor authentication for remote
    access.
    No. 17-2146                                                               9
    costs, which these banks seek to recover from Schnucks.
    Appellants’ Br. at 11. 4
    In effect, the banks seek reimbursement for their losses
    above and beyond the remedies provided under the card
    network contracts. They say their losses include employee
    time to investigate and resolve fraud claims, payments to
    indemnify customers for fraudulent charges, and lost interest
    and transaction fees on account of changes in customer card
    usage. Plaintiffs estimate their damages in the tens of millions
    of dollars, placing this lawsuit in the same league as some
    others between financial institutions and breached retail
    merchants. See David L. Silverman, Developments in Data
    Security Breach Liability, 72 Bus. Law. 185, 185 (Winter 2016–
    17) (discussing three recent data breach cases settled by retail
    merchants for more than $15 million, including attorney fees).
    In a thorough order, the district court dismissed all of the
    plaintiff banks’ claims against Schnucks. No. 15-cv-01125-
    MJR, 
    2017 WL 1551330
    , at *1–2 (S.D. Ill. May 1, 2017).
    Jurisdiction was secure under the Class Action Fairness Act.
    The proposed plaintiff class of banks includes both Illinois
    and Missouri citizens; Schnucks is a citizen of Missouri; and
    4 The most important set of facts alleged by the plaintiffs involves the
    March 14–30 period, when Schnucks knew of the data breach but had not
    yet alerted banks and consumers. Because Schnucks “derives the majority
    of its revenue from electronic payment card transactions,” plaintiffs
    believe Schnucks intentionally dragged its feet in announcing the data
    breach. See Am. Compl. ¶ 59. By having substandard security and by
    delaying disclosure of the breach, plaintiffs allege, Schnucks “saved the
    cost of implementing the proper payment card security policies,
    procedures, protocols, and hardware and software systems, and …
    wrongfully shifted the risk and expense of the Data Breach” to the banks.
    Am. Compl. ¶ 84.
    10                                                  No. 17-2146
    the matter in controversy exceeds $5 million. See 28 U.S.C.
    § 1332(d)(2). The parties agreed that both Illinois and
    Missouri laws apply, given the proposed plaintiff class. None
    of the plaintiff banks’ claims made it past the pleadings. The
    complaint was dismissed for failing to state a plausible claim
    under any of the banks’ theories.
    II. Analysis
    A. Standard of Review
    We review de novo the dismissal of a complaint for failure
    to state a claim under Rule 12(b)(6), accepting plaintiffs’
    factual allegations as true and drawing all permissible
    inferences in the plaintiffs’ favor. West Bend Mut. Insurance Co.
    v. Schumacher, 
    844 F.3d 670
    , 675 (7th Cir. 2016). A plaintiff
    must, however, “provide more than mere labels and
    conclusions” and must go beyond “a formulaic recitation of
    the elements of a cause of action for her complaint to be
    considered adequate.” 
    Id., quoting Bell
    v. City of Chicago, 
    835 F.3d 736
    , 738 (7th Cir. 2016). A party must also “proffer some
    legal basis to support his cause of action” and cannot expect
    either the district court or this court to “invent legal
    arguments” on his behalf. County of McHenry v. Insurance Co.
    of the West, 
    438 F.3d 813
    , 818 (7th Cir. 2006), quoting Stransky
    v. Cummins Engine Co., 
    51 F.3d 1329
    , 1335 (7th Cir. 1995).
    B. Common Law Claims
    1. Framing the Analysis
    The plaintiff banks’ substantive claims all arise under state
    law, but the relevant state courts have not addressed the
    specific questions we face. Under Erie Railroad Co. v. Tompkins,
    
    304 U.S. 64
    (1938), our role in deciding these questions of state
    law is to predict how the highest courts of the respective states
    No. 17-2146                                                      11
    would answer them. In re Zimmer, NexGen Knee Implant
    Products Liability Litig., 
    884 F.3d 746
    , 751 (7th Cir. 2018);
    Cannon v. Burge, 
    752 F.3d 1079
    , 1091 (7th Cir. 2014). We are to
    take into account trends in a state’s intermediate appellate
    decisions, see In re 
    Zimmer, 884 F.3d at 751
    , but the focus is
    always a prediction about the state’s highest court. See Santa’s
    Best Craft, LLC v. St. Paul Fire & Marine Insurance Co., 
    611 F.3d 339
    , 349 n.6 (7th Cir. 2010), citing Taco Bell Corp. v. Continental
    Cas. Co., 
    388 F.3d 1069
    , 1077 (7th Cir. 2004) (concerned with
    making a “reliable prediction of how the Supreme Court of
    Illinois would rule”). In predicting state law in the relevant
    states, we try to avoid simply grafting abstract hornbook law
    principles onto the particular fact pattern in front of us, see
    NLRB v. Int’l Measurement & Control Co., 
    978 F.2d 334
    , 339 (7th
    Cir. 1992) (refusing to defer to agency’s prediction of state law
    based on “blackletter terms” without citing state court
    decisions), but we can look to well-reasoned decisions in other
    jurisdictions for guidance.
    To frame the issues, we begin by examining the economic
    loss doctrine in commercial litigation. For more than fifty
    years, state courts have generally refused to recognize tort
    liabilities for purely economic losses inflicted by one business
    on another where those businesses have already ordered their
    duties, rights, and remedies by contract. The reason for this
    rule is that “liability for purely economic loss … is more
    appropriately determined by commercial rather than tort
    law,” i.e., by the system of rights and remedies created by the
    parties themselves. Indianapolis-Marion County Public Library
    v. Charlier Clark & Linard, P.C., 
    929 N.E.2d 722
    , 729 (Ind. 2010),
    citing Miller v. U.S. Steel Corp., 
    902 F.2d 573
    , 574 (7th Cir. 1990)
    (“tort law is a superfluous and inapt tool for resolving purely
    commercial disputes” whose risks are better allocated by the
    12                                                    No. 17-2146
    contracting parties themselves than by judges), and citing
    Seely v. White Motor Co., 
    403 P.2d 145
    (Cal. 1965). “The issue”
    in these cases “is not causation; it is duty,” in the sense that
    tort law generally does not supply additional liabilities on top
    of specified contractual remedies. Rardin v. T & D Machine
    Handling, Inc., 
    890 F.2d 24
    , 26, 27–28 (7th Cir. 1989) (applying
    Illinois law).
    Courts invoking the economic loss rule trust the
    commercial parties interested in a particular activity to work
    out an efficient allocation of risks among themselves in their
    contracts. Courts “see no reason to intrude into the parties’
    allocation of the risk” when bargaining should be sufficient to
    protect the parties’ interests, and where additional tort law
    remedies would act as something of a wild card to upset their
    expectations. East River S.S. Corp. v. Transamerica Delaval Inc.,
    
    476 U.S. 858
    , 872–73, 875–76 (1986) (adopting economic loss
    rule in admiralty cases); see also Sovereign Bank v. BJ’s
    Wholesale Club, Inc., 
    533 F.3d 162
    , 176 (3d Cir. 2008) (explaining
    Robins Dry Dock & Repair Co. v. Flint, 
    275 U.S. 303
    (1927), an
    early case limiting tort liabilities for economic losses).
    The doctrinal explanation is relatively simple: tort law
    often applies where there is “a sudden, calamitous accident as
    distinct from a mere failure to perform up to commercial
    expectations.” 
    Rardin, 890 F.2d at 29
    . In the latter case, contract
    law should be sufficient because a sophisticated business
    plaintiff could “have protected himself through his
    contractual arrangements” ahead of time. See 
    id. at 28;
    see also
    Chicago Heights Venture v. Dynamit Nobel of America, Inc., 
    782 F.2d 723
    , 729 (7th Cir. 1986) (applying Illinois law and
    comparing “the ‘safety-insurance policy of tort law’” to the
    “‘expectation-bargain protection policy’ of contracts”); Mark
    No. 17-2146                                                     13
    P. Gergen, The Ambit of Negligence Liability for Pure Economic
    Loss, 
    48 Ariz. L
    . Rev. 749, 752 (2006) (even when there is a need
    for tort liability, if conduct results in “solely pecuniary harm”
    and there are reasons to doubt tort law’s efficacy in providing
    proper incentives, “the common law has erred on the side of
    preserving freedom of action, rather than on the side of
    protecting against harm”).
    This principle has also been applied in other contexts. For
    example, when physical or personal injuries occur because of
    defective products, “[s]ociety has a great interest in spreading
    the cost of such injuries,” but when a product causes
    economic loss by simply failing to perform as expected, tort
    liability is unwarranted; the Uniform Commercial Code
    already provides “a finely tuned mechanism for dealing with
    the rights of parties to a sales transaction with respect to
    economic losses.” Sanco, Inc. v. Ford Motor Co., 
    579 F. Supp. 893
    , 897, 898 (S.D. Ind. 1984) (Dillin, J.), citing 
    Seely, 403 P.2d at 151
    . Similarly, in construction disputes, where the
    complex relationship of contractors and subcontractors is
    analogous to the web of contracts in this case, the economic
    loss rule encourages contracting parties to “prospectively
    allocate risk and identify remedies within their agreements.”
    Flagstaff Affordable Housing Ltd. Partnership v. Design Alliance,
    Inc., 
    223 P.3d 664
    , 670 (Ariz. 2010). “These goals would be
    undermined by an approach that allowed extra-contractual
    recovery for economic loss based not on the agreement itself,
    but instead on a court’s post hoc determination that a
    construction defect”—or a data breach—“posed risks of other
    loss … .” 
    Id. Some form
    of the economic loss rule is the rule in most
    jurisdictions in the United States, 
    Rardin, 890 F.2d at 28
    ,
    14                                                  No. 17-2146
    including Illinois and Missouri. In Illinois, it is known as the
    Moorman doctrine, from Moorman Mfg. Co. v. Nat’l Tank Co.,
    
    435 N.E.2d 443
    (Ill. 1982). Illinois applies Moorman to services
    as well as the sale of goods because both business contexts
    provide “the ability to comprehensively define a
    relationship” by contract. Fireman’s Fund Ins. Co. v. SEC
    Donohue, Inc., 
    679 N.E.2d 1197
    , 1200 (Ill. 1997), quoting
    Congregation of the Passion, Holy Cross Province v. Touche Ross &
    Co., 
    636 N.E.2d 503
    , 514 (Ill. 1994). Illinois recognizes three
    exceptions, but none applies here: for personal injuries or
    property damage resulting from sudden or dangerous
    occurrences, for fraud, and for negligent misrepresentations
    by professional business advisors. 
    Id. at 1199.
    Missouri more
    generally prohibits “a plaintiff from seeking to recover in tort
    for economic losses that are contractual in nature.” Autry
    Morlan Chevrolet Cadillac, Inc. v. RJF Agencies, Inc., 
    332 S.W.3d 184
    , 192 (Mo. App. 2010), citing Crowder v. Vandendeale, 
    564 S.W.2d 879
    , 881 (Mo. 1978). Exceptions to the Missouri
    economic loss doctrine are limited to losses arising from
    personal injuries, property damage or destruction, or from
    special relationships giving rise to fiduciary duties. Autry
    Morlan 
    Chevrolet, 332 S.W.3d at 192
    , 194.
    The parties offer numerous doctrinal arguments about the
    economic loss rule and common law duties. Before we dig
    into those arguments, we pause to explain the broader choice
    between paradigms in this case. In deciding whether
    economic losses are recoverable in tort law, courts face a
    choice between what scholars have called the “stranger
    paradigm” and the “contracting parties paradigm.” Catherine
    M. Sharkey, Can Data Breach Claims Survive the Economic Loss
    Rule?, 66 DePaul L. Rev. 339, 344 (2017); see also Dan B. Dobbs,
    An Introduction to Non-Statutory Economic Loss Claims, 48 Ariz.
    No. 17-2146                                                  15
    L. Rev. 713, 714 (2006); William Powers, Jr., Border Wars, 
    72 Tex. L. Rev. 1209
    , 1229 (1994) (addressing more general issue
    of borders between contract and tort law in terms of
    competing paradigms); Vincent R. Johnson, The Boundary-Line
    Function of the Economic Loss Rule, 66 Wash. & Lee L. Rev. 523,
    546 (2009) (addressing purposes of rule).
    The stranger paradigm fits “when an actor’s negligence
    causes financial losses to a party with whom the actor has no
    pre-existing relationship.” Sharkey, 66 DePaul L. Rev. at 344.
    The stranger paradigm seeks to set the “parameters of the
    duty of reasonable care … at physical injuries and property
    damage” and, traditionally, does not allow recovery for
    simple economic losses. 
    Id. But some
    courts taking this
    approach in data breach cases have decided to allow tort
    recovery anyway, both for consumers and for sophisticated
    financial institutions. These courts, one scholar argues, “are
    doing so not only in an ad hoc manner, but also by stretching
    and misapplying the stranger paradigm” instead of taking a
    “broader regulatory perspective.” 
    Id. at 383.
        The contracting parties paradigm approaches the problem
    differently. Under this paradigm, “the question is whether a
    duty should be imposed by [tort] law … over and above … any
    voluntary allocation of risks and responsibilities already
    made between the contracting parties.” 
    Id. at 344–45.
    In this
    approach, the presence of contract remedies sets a boundary
    for tort law. If “contract law purports to decide the case, the
    negligence paradigm … should stay in the background.” 
    Id. at 345
    n.16, quoting 
    Powers, 72 Tex. L. Rev. at 1229
    (alteration
    in original).
    Courts using the contracting parties paradigm first take
    into account the mechanisms the parties have chosen to
    16                                                  No. 17-2146
    allocate the risks they face. Courts then consider whether
    these mechanisms have sufficiently reduced the externalities
    visited upon third parties, or whether the breached entities
    need additional financial incentives to pursue better data
    security. 
    Id. at 382–83.
    The ultimate question is whether these
    arrangements already place costs on “the cheapest cost
    avoider” or whether additional tort liability is necessary
    because the existing contracts “externalize significant risk
    onto hapless third parties.” 
    Id. at 383.
        The plaintiff banks emphasize here that they have no
    direct contractual relationship with Schnucks. That’s true, but
    it does not undermine use of the contracting parties
    paradigm. The plaintiff banks and Schnucks all participate in
    a network of contracts that tie together all the participants in
    the card payment system. That network of contracts imposes
    the duties plaintiffs rely upon and provides contractual
    remedies for breaches of those duties. See Annett Holdings, Inc.
    v. Kum & Go, L.C., 
    801 N.W.2d 499
    , 504 (Iowa 2011) (“When
    parties enter into a chain of contracts, even if the two parties
    at issue have not actually entered into an agreement with each
    other, courts have applied the ‘contractual economic loss rule’
    to bar tort claims for economic loss, on the theory that tort law
    should not supplant a consensual network of contracts.”),
    citing Dobbs, 
    48 Ariz. L
    . Rev. at 726 (discussing relationships
    among buyers, retailers, and manufacturers and landowners,
    contractors, and subcontractors). Under these circumstances,
    we believe the Illinois and Missouri courts would most likely
    use the contracting parties paradigm.
    As described above, in deciding to join the card payment
    system, Schnucks agreed to abide by the data security
    standards of the industry, the PCI DSS. Schnucks also agreed
    No. 17-2146                                                 17
    to be subject to assessments and fines from the card networks
    in the event that it was responsible for data breaches and
    unauthorized card activity. On their end, the plaintiff banks
    agreed to exceed federal requirements for indemnifying their
    card-holders and also consented to the remedial assessment
    and reimbursement process provisions and related risks.
    Even if these issuing banks had heard of this particular
    merchant before its data breach was announced, parties to the
    card payment system are not ships passing (or colliding) in
    the night. All parties involved in the complicated network of
    contracts that establish the card payment system have
    voluntarily decided to participate and to accept responsibility
    for the risks inherent in their participation. This includes at
    least some risk of not being fully reimbursed for the costs of
    another party’s mistake.
    The details of these reimbursement remedies are not fully
    apparent from the contract excerpts presented in this case. But
    what matters is not the details of the remedies but their
    existence. Merchants and acquiring banks face the financial
    cost of data breaches through the card networks’
    reimbursement regime. That means the cheapest cost
    avoiders (the data handlers) already bear the cost of data
    security protocols and breaches. The plaintiff banks in this
    case make no effort to explain how this system is inadequate
    in providing reimbursement. They ask us, though, to predict
    the recognition of new theories of state tort liability through
    simplistic application of sweeping black-letter tort law
    principles, leaving the card network reimbursement systems
    to be considered as mere damage issues on remand.
    Given this network of contracts and contractual remedies,
    we decline plaintiffs’ invitation to apply a version of the
    18                                                    No. 17-2146
    stranger paradigm. We doubt the wisdom of recognizing new,
    supplemental liabilities without a clear sense of why they are
    necessary. It’s not as if the banks have no rights or remedies at
    all. This is also not a situation where sensitive data is collected
    and then disclosed by private, third-party actors who are not
    involved in the customers’ or banks’ direct transactions. See,
    e.g., In re Equifax, Inc., Customer Security Data Breach Litigation,
    — F. Supp. 3d —, 
    2017 WL 6031680
    (J.P.M.L. 2017). The
    plaintiff banks seek additional recovery because they are
    disappointed by the reimbursement they received through
    the contractual card payment systems they joined voluntarily.
    The legal issues raised by the plaintiff banks are similar to
    the issues that arise in large construction projects with layers
    of contractors, subcontractors, sub-subcontractors, and so on.
    There may be no direct contractual relationship between a
    negligent subcontractor and other businesses that suffer from
    delays and expenses it caused. Yet all participants are tied into
    a network of contracts that allocate the risks of sub-standard
    or slow work. In such cases, as the Indiana Supreme Court has
    explained, claims of purely economic loss are better treated
    under contract law, without supplementary remedies from
    tort law. See Indianapolis-Marion County Public 
    Library, 929 N.E.2d at 740
    (“the substance of our holding is that when
    it comes to claims for pure economic loss, the participants in
    a major construction project define for themselves their
    respective risks, duties, and remedies in the network or chain
    of contracts governing the project”). Illinois and Missouri
    have reached the same general conclusion about contractual
    relationships in construction disputes. See Fireman’s Fund
    Insurance 
    Co., 679 N.E.2d at 1198
    , 1201–02 (holding that
    economic loss rule barred bar tort recovery by subcontractor’s
    insurance company against construction engineers); Fleischer
    No. 17-2146                                                       19
    v. Hellmuth, Obata & Kassabaum, Inc., 
    870 S.W.2d 832
    , 834, 837
    (Mo. App. 1993) (holding that in absence of direct contract,
    architect owed no duty of care and was not liable to
    construction manager in tort for economic losses as result of
    negligent performance of contract with property owner).
    As we explain in more detail below, we do not see either a
    paradigmatic or doctrinal reason why either Illinois or
    Missouri would recognize a tort claim by the issuing banks in
    this case, where the claimed conduct and losses are subject to
    these networks of contracts. We now turn to plaintiffs’ more
    specific doctrinal arguments.
    2. Negligence Claims
    a. Illinois Law
    Plaintiffs allege that Schnucks, a retail merchant, had a
    common law duty to safeguard customers’ track data and that
    the duty extends to its customers’ banks. We first consider this
    question under Illinois tort law, which asks whether the
    defendant had “an obligation of reasonable conduct for the
    benefit of the plaintiff” using a four-factor analysis. Marshall
    v. Burger King Corp., 
    856 N.E.2d 1048
    , 1057 (Ill. 2006). Though
    duty is a basic concept in tort law, the Illinois Supreme Court
    has not directly spoken to this question in the context of data
    breaches, so “we consider decisions of intermediate appellate
    courts unless there is good reason to doubt the state’s highest
    court would agree with them.” Anicich v. Home Depot U.S.A.,
    Inc., 
    852 F.3d 643
    , 649 (7th Cir. 2017), citing Rodas v. Seidlin, 
    656 F.3d 610
    , 626 (7th Cir. 2011).
    The Illinois Appellate Court addressed this topic in Cooney
    v. Chicago Public Schools, where Social Security numbers and
    other personal information of more than 1,700 former school
    20                                                   No. 17-2146
    employees were disclosed in a mailing. 
    943 N.E.2d 23
    , 27 (Ill.
    App. 2010). The Cooney court first considered whether a duty
    to safeguard personal information was imposed by federal or
    state statutes. It rejected the theory that the Illinois Personal
    Information Protection Act (PIPA) or the federal Health
    Insurance Portability and Accountability Act of 1996 (HIPAA)
    imposed any such duty beyond providing notice of a security
    breach. 
    Id. at 28.
        Cooney then rejected “‘a new common law duty’ to
    safeguard information,” writing that “we do not believe that
    the creation of a new legal duty beyond legislative
    requirements,”—i.e., beyond notice—“is part of our role on
    appellate review.” 
    Id. at 28–29.
    The Cooney court concluded
    that “the legislature has specifically addressed the issue and
    only required the [School] Board to provide notice of the
    disclosure,” which it had done. 
    Id. at 29.
    The contractor who
    actually sent the offending mailing, All Printing & Graphics,
    Inc., was similarly excused from tort liability for its
    negligence. 
    Id. Cooney did
    not characterize its holding on the
    duty question as an application of the economic loss rule. The
    opinion reads as a more general statement that no duty to
    safeguard personal information existed, regardless of the
    kind of loss. See 
    id. at 28–29.
    Nothing in the Cooney analysis
    indicates that retail merchants like Schnucks should or would
    be treated differently than the former employer and
    contractor at issue there. In the absence of some other reason
    why the Illinois Supreme Court would likely disagree with
    the Cooney analysis on this issue of duty under the common
    law, see 
    Anicich, 852 F.3d at 649
    , we predict that the state court
    No. 17-2146                                                           21
    would not impose the common law data security duty the
    plaintiff banks call for here. 5
    Even if Cooney had not come to this conclusion, Illinois
    would probably apply the economic loss rule to bar recovery
    anyway. As mentioned above, Illinois’ Moorman doctrine has
    three exceptions, Fireman’s Fund Insurance 
    Co., 679 N.E.2d at 1199
    –1200, but none applies here. There was no sudden or
    dangerous occurrence. Data breaches are a foreseeable (and
    foreseen) risk of participating in the card networks, not an
    unexpected physical hazard. See 
    Moorman, 435 N.E.2d at 449
    ,
    citing Cloud v. Kit Mfg. Co., 
    563 P.2d 248
    , 251 (Alaska 1977)
    (severe property damage caused by fire). Though the plaintiff
    banks suggested in their complaint that Schnucks engaged in
    “wrongful conduct” or “wrongful actions … [and] omissions”
    by not immediately announcing the data breach,
    see Am. Compl. ¶¶ 59, 112-13, 117-18, these allegations fail to
    identify specifically an actionable fraudulent statement under
    Illinois law. See below at 33–36; see also 
    Moorman, 435 N.E.2d at 452
    , citing Soules v. General Motors Corp., 
    402 N.E.2d 599
    , 601
    (Ill. 1980) (involving allegations of falsified franchisee
    financial reports). Finally, Schnucks did not have a
    professional advisory relationship with the plaintiff banks
    here, so that exception also does not apply. See 
    Moorman, 435 N.E.2d at 452
    , citing Rozny v. Marnul, 
    250 N.E.2d 656
    , 663 (Ill.
    5 The plaintiff banks attempt to distinguish Cooney by pointing out
    that track data, as opposed to Social Security numbers, can be used more
    easily to cause lasting financial harm. From the card-holding consumer’s
    perspective, given federally-mandated and card network-promised
    indemnification, this may or may not be true. And the plaintiffs point to
    no Illinois authority that explains why this difference, or the fact that
    financial institutions seek to impose this duty here, should change the
    result.
    22                                                  No. 17-2146
    1969) (permitting recovery for economic losses caused by “a
    surveyor’s professional mistakes”); see also In re Michaels
    Stores Pin Pad Litigation, 
    830 F. Supp. 2d 518
    , 530 (N.D. Ill.
    2011) (explaining Fireman’s Fund and other Illinois
    “professional malpractice” cases).
    The plaintiff banks respond to these points by claiming
    that Illinois’ economic loss rule does not apply when the duty
    is “extra-contractual.” The banks claim that a duty attaches
    because there is no direct contract between these parties. The
    problem is that all parties in the card networks (including
    card-holding customers) expect everyone to comply with
    industry-standard data security policies as a matter of
    contractual obligation. See above at 5–6. Cooney shows that
    Illinois has not recognized an independent common law duty
    to safeguard personal information. The banks’ argument also
    fails to account for the scope of the Moorman doctrine.
    Schnucks assumed contractual data security responsibilities
    in joining the card networks. Even if the plaintiff banks were
    not direct parties to agreements with Schnucks, they seek
    additional recovery for the breach of those contractual duties.
    “Even in the absence of an alternative remedy in contract,”
    Illinois does not permit tort recovery for businesses who seek
    to correct the purely economic “defeated expectations of a
    commercial bargain.” 2314 Lincoln Park West Condo. Ass’n v.
    Mann, Gin, Ebel & Frazier, Ltd., 
    555 N.E.2d 346
    , 350 (Ill. 1990),
    quoting Anderson Elec., Inc. v. Ledbetter Erection Corp., 
    503 N.E.2d 246
    , 249 (Ill. 1986). The plaintiff banks are
    disappointed in the amounts the card networks’ contractual
    reimbursement process provided. That type of tort claim is
    not permitted under Moorman.
    No. 17-2146                                                              23
    b. Missouri Law
    The Missouri appellate courts have said less than Illinois
    appellate courts on this question of duty. All the same
    elements important to the Cooney court, though, are also
    present in Missouri law. The Missouri courts use the same
    four-factor common law duty test. Compare Hoffman v. Union
    Elec. Co., 
    176 S.W.3d 706
    , 708 (Mo. 2005), with 
    Marshall, 856 N.E.2d at 1057
    . Missouri, like Illinois, has a data privacy
    statute whose only consumer-facing mandate is notice.
    Compare Mo. Ann. Stat. § 407.1500 (2017), with 815 Ill. Comp.
    Stat. 530/10 (2017); see also Sharkey, 66 DePaul L. Rev. at 340
    n.2 (noting that 47 states have notice statutes and that only
    three states “take statutory protection a step further”). In
    addition, the state’s attorney general has “exclusive
    authority” for enforcing Missouri’s data breach notice statute
    by a civil action. § 407.1500(4) (2017). 6
    Other state legislatures have acted to impose the kind of
    reimbursement or damages liability the plaintiff banks call for
    here. Minnesota, Nevada, and Washington stand out as
    examples. See Minn. Stat. Ann. § 325E.64, subd. 3 (2017)
    (requiring reimbursement and imposing liability); Nev. Rev.
    Stat. Ann. § 603A.215(1), (3) (2017) (requiring PCI DSS
    compliance, but holding harmless compliant data collectors
    who are less than grossly negligent); Wash. Rev. Code Ann.
    § 19.255.020(3) (2017) (requiring reimbursement). We think
    the Missouri courts would take notice of these state laws and
    6 So far, only one court has examined this statutein a data breach case
    in a reported opinion. It predicted that no such negligence cause of action
    exists under Missouri law. Amburgy v. Express Scripts, Inc., 
    671 F. Supp. 2d 1046
    , 1055 (E.D. Mo. 2009).
    24                                                 No. 17-2146
    draw the inference that the Missouri legislature has chosen
    not to go as far. There may be statutes in other states that
    envision some type of monetary recovery, see Amburgy, 671 F.
    Supp. 2d at 1056, though it is clear that Missouri is not one of
    them. See § 407.1500; see also Rachael M. Peters, Note, So
    You’ve Been Notified, Now What? The Problem with Current Data-
    Breach Notification Laws, 
    56 Ariz. L
    . Rev. 1171, 1185–87 (2014).
    Even if Missouri courts were not convinced by these
    comparisons and recognized a common law duty to
    safeguard customer data, the economic loss doctrine would
    still thwart the plaintiff banks’ claims. Missouri does not
    permit “recovery in tort for pure economic damages” without
    personal injuries or property damage. Autry Morlan Chevrolet
    Cadillac, Inc. v. RJF Agencies, Inc., 
    332 S.W.3d 184
    , 192 (Mo.
    App. 2010). Missouri’s economic loss doctrine applies to
    “losses that are contractual in nature,” Captiva Lake
    Investments, LLC v. Ameristructure, Inc., 
    436 S.W.3d 619
    , 628
    (Mo. App. 2014), citing Autry Morlan 
    Chevrolet, 332 S.W.3d at 192
    , which, as explained above regarding the contracting
    parties paradigm, applies here. There is an exception from the
    economic loss rule for special relationships that give rise to a
    fiduciary duty, but “the existence of a business relationship
    does not give rise to a fiduciary relationship, nor a
    presumption of such a relationship” short of, for example, a
    “financial partnership” or principal-agent relationship. See
    Autry Morlan 
    Chevrolet, 332 S.W.3d at 194
    , 195 (citations
    omitted). Like Illinois, Missouri is not likely to recognize the
    negligence claims the plaintiff banks assert here.
    3. Negligence Per Se
    The plaintiff banks’ negligence per se claims fail because of
    the same statutory inferences. Neither Illinois nor Missouri
    No. 17-2146                                                              25
    has legislatively imposed liability for personal data breaches,
    opting instead to limit their statutory intervention to notice
    requirements. 
    Cooney, 943 N.E.2d at 28
    –29; Amburgy, 671 F.
    Supp. 2d at 1055. This is critical. Both states require a plaintiff
    to show, as the first element of a negligence per se action, that
    a statute or ordinance has been violated. Departures from
    industry custom are not sufficient, since industry custom
    would be a source of common law duties to be litigated in a
    negligence action. See Bier v. Leanna Lakeside Property Ass’n,
    
    711 N.E.2d 773
    , 783 (Ill. App. 1999); Sill v. Burlington Northern
    Railroad, 
    87 S.W.3d 386
    , 392 (Mo. App. 2002). 7
    To bolster their negligence and negligence per se
    arguments, the plaintiff banks cite two district court cases
    declining to dismiss similar claims by banks against retail
    merchants. These cases are not persuasive regarding the
    common law of Illinois or Missouri. One case consciously
    sought to further statutory data security breach policies not
    present here. In re Target Corp. Customer Data Security Breach
    Litig., 
    64 F. Supp. 3d 1304
    , 1310 (D. Minn. 2014) (denying in
    7 Plaintiffs allege a violation of the Federal Trade Commission Act, 15
    U.S.C. § 45, but they do not point to any FTC interpretations or court
    interpretations that extend its coverage to financial institutions in
    merchant data breach cases. Irwin v. Jimmy John’s Franchise, LLC and FTC
    v. Wyndham Worldwide Corp. both involved customer injuries, not actions
    by their banks. 
    175 F. Supp. 3d 1064
    (C.D. Ill. 2016); 
    799 F.3d 236
    (3d Cir.
    2015). The Illinois Consumer Fraud and Deceptive Business Practices Act
    incorporates by reference Commission and court interpretations of the
    FTCA, 815 Ill. Comp. Stat. 505/2, but again, plaintiffs point us to no such
    interpretations that support their claim of an FTCA violation here. These
    FTCA arguments are too underdeveloped to consider further. See Bonte v.
    U.S. Bank, N.A., 
    624 F.3d 461
    , 465–67 (7th Cir. 2010) (affirming motion to
    dismiss generalized claim when appellants “provided precious little in the
    way of argument” in either district court or appeal).
    26                                                            No. 17-2146
    part motion to dismiss). The other was based on a prediction
    of Georgia law that seems to have been incorrect. In re The
    Home Depot, Inc., Customer Data Security Breach Litig., No. 1:14-
    md-2583-TWT (MDL No. 2583), 
    2016 WL 2897520
    , at *6–7
    (N.D. Ga. May 18, 2016) (same). 8 The district court here was
    correct not to follow these cases on this point.
    4. Other Common Law Claims
    The plaintiff banks assert three other claims sounding in
    the common law of contracts: unjust enrichment, implied
    contract, and third-party beneficiary. The district court
    correctly dismissed them as well. All three fail because of
    basic contract law principles.
    Illinois law and Missouri law on these common law
    contract theories are similar. Both refuse to recognize unjust
    enrichment claims where contracts already establish rights
    and remedies. Guinn v. Hoskins Chevrolet, 
    836 N.E.2d 681
    , 704
    (Ill. App. 2005) (“where there is a specific contract that
    governs the relationship of the parties, the doctrine of unjust
    enrichment has no application” (brackets and citation
    omitted)); Howard v. Turnbull, 
    316 S.W.3d 431
    , 438 (Mo. App.
    2010) (“plaintiff’s entering into an agreement with known
    risks precluded recovery under an unjust enrichment claim
    when an anticipated contingency occurred”), citing Farmers
    New World Life Ins. Co. v. Jolley, 
    747 S.W.2d 704
    , 707 (Mo. App.
    1988).
    8 The Court of Appeals of Georgia later disagreed with the Home Depot
    prediction of state law. McConnell v. Dep’t of Labor, 
    787 S.E.2d 794
    , 797 n.4
    (Ga. App. 2016), vacated on other grounds, McConnell v. Dep’t of Labor, 
    805 S.E.2d 79
    (Ga. 2017).
    No. 17-2146                                                       27
    Illinois and Missouri also do not recognize implied
    contracts where written agreements define the business
    relationship. Industrial Lift Truck Service Corp. v. Mitsubishi Int’l
    Corp., 
    432 N.E.2d 999
    , 1002 (Ill. App. 1982) (“Quasi-contract is
    not a means for shifting a risk one has assumed under
    contract.”); City of Cape Girardeau ex rel. Kluesner Concreters v.
    Jokerst, Inc., 
    402 S.W.3d 115
    , 121–22, 122 (Mo. App. 2013)
    (contract may be implied by law where “there is no formal
    contract” covering specific subject of dispute).
    Neither state recognizes third-party beneficiary claims
    unless the beneficiary is identified or the third-party benefit
    is clearly intended by the contracting parties. Construction
    law is again helpful here. Illinois and Missouri have required
    a subcontractor to show that the contract in question between
    the principal parties clearly extends the rights of a third-party
    beneficiary. See L.K. Comstock & Co. v. Morse/UBM Joint
    Venture, 
    505 N.E.2d 1253
    , 1257 (Ill. App. 1987); Drury Co. v.
    Missouri United School Insurance Counsel, 
    455 S.W.3d 30
    , 34–35
    (Mo. App. 2014).
    As the district court found, Schnucks was not unjustly
    enriched. Its card-paying customers paid the same amount as
    those paying in cash; thus there is no unjust enrichment left
    uncovered outside of the card payment system contracts. As
    for an implied contract, the First Circuit has recognized an
    implied contract between a grocery store’s customers and the
    store over the safeguarding of personal data. See Anderson v.
    Hannaford Bros. Co., 
    659 F.3d 151
    , 158–59 (1st Cir. 2011)
    (predicting Maine law). In this case, however, the only
    business activity between the plaintiff banks and Schnucks
    happened (nearly instantaneously) through the indirect route
    of the card payment system, not in a direct face-to-face retail
    28                                                    No. 17-2146
    transaction. Even if we assume that Illinois or Missouri would
    accept the Hannaford Brothers logic, in the absence of any state
    authority on the point, we see no basis to predict that either
    state would extend that logic to find that the implied
    contractual duty extended to a customer’s bank.
    Similarly, we have no reason to think Illinois or Missouri
    would conclude that a retail merchant and its customer
    specifically intended the customer’s bank to be a third-party
    beneficiary of their retail transaction. Illinois has rejected this
    theory where a construction subcontractor (not unlike the
    plaintiff banks here) sought damages for a breach of the
    contract between a construction manager and a construction
    client (like the retail merchant and customer here,
    respectively), where provisions of the contract were
    inconsistent with the idea that it envisioned the subcontractor
    as a third-party beneficiary. L.K. Comstock & 
    Co., 505 N.E.2d at 1257
    . Missouri has permitted third-party recovery in the
    context of a subcontractor and a construction client’s
    insurance policy, though apparently only because the relevant
    contract specifically named “the Owner, the Contractor,
    Subcontractors and Sub-subcontractors in the Project” in its
    insurance provisions. Drury 
    Co., 455 S.W.3d at 35
    (emphasis
    added).
    The plaintiff banks have not argued on appeal that the
    card payment system contracts specifically envision them as
    a third-party beneficiary regarding the data security
    provisions, nor did they argue this point in the district court
    beyond vague references to the interchange fees the issuing
    banks receive simply for being part of the card payment
    system. See Dkt. 65 at 17; Am. Compl. ¶ 24. This is not enough
    to overcome the “strong presumption” in Illinois law “that
    No. 17-2146                                                    29
    parties intend a contract to apply solely to themselves” for
    enforcement purposes. Bank of America, N.A. v. Bassman FBT,
    L.L.C., 
    981 N.E.2d 1
    , 11 (Ill. App. 2012); see also Martis v.
    Grinnell Mut. Reinsurance Co., 
    905 N.E.2d 920
    , 924 (Ill. App.
    2009) (“It must appear from the language of the contract that
    the contract was made for the direct, not merely incidental,
    benefit of the third person.”); accord, FDIC v. G. III
    Investments, Ltd., 
    761 S.W.2d 201
    , 204 (Mo. App. 1988) (“The
    party claiming rights as a third party beneficiary has the
    burden of showing that provisions in the contract were
    intended to be made for his direct benefit.”).
    No express contract exists between Schnucks and its
    customers (beyond the basic exchange of products for
    payment), let alone one that specifically intends to include the
    plaintiff banks as third-party beneficiaries. As with
    construction contracts, the direct rights and reimbursement
    possibilities provided by the web of contracts, either for the
    construction job or the card payment system, define the limits
    of recovery. See, e.g., Indianapolis-Marion County Public Library
    v. Charlier Clark & Linard, P.C., 
    929 N.E.2d 722
    , 740 (Ind. 2010).
    In this case, the web of contracts also precludes resort to
    secondary common law contract theories. We affirm the
    district court’s rejection of these theories.
    5. Decisions in Other Circuits
    One other federal circuit court has reached a different
    prediction of state law on facts similar to these. Our
    colleagues in the Fifth Circuit predicted that New Jersey
    would recognize a negligence claim brought by an issuing
    bank against a payment processor, though not retail
    merchants. See Lone Star Nat’l Bank, N.A. v. Heartland Payment
    Sys., Inc., 
    729 F.3d 421
    (5th Cir. 2013). Our conclusion is
    30                                                  No. 17-2146
    different for at least two reasons. First, the Lone Star court
    relied on New Jersey’s practice of being “a leader in
    expanding tort liability.” 
    Id. at 426–27,
    quoting Hakimoglu v.
    Trump Taj Mahal Assocs., 
    70 F.3d 291
    , 295 (3d Cir. 1995) (Becker,
    J., dissenting). Second, unlike the Lone Star court, we know
    enough about the card network agreements in our record for
    them to inform our analysis. 
    See 729 F.3d at 426
    .
    Our predictions here are closer to the analysis in two cases
    from the Third and First Circuits. The Third Circuit applied
    the economic loss rule to bar negligence claims and rejected
    most of the other theories invoked by issuing banks against a
    breached retail merchant. Sovereign Bank v. BJ’s Wholesale Club,
    Inc., 
    533 F.3d 162
    , 175–78, 179–83 (3d Cir. 2008). Though the
    Sovereign Bank court reached a different conclusion about the
    third-party beneficiary claims in that case, 
    id. at 168–73,
    here
    we have no specific argument on appeal to support the
    plaintiff banks’ claims for third-party beneficiary status.
    Similarly, the First Circuit has rejected a negligence theory
    because of the economic loss rule and also rejected a third-
    party beneficiary theory under the card payment system
    contracts. In re TJX Companies Retail Security Breach Litig., 
    564 F.3d 489
    , 498–99 (1st Cir. 2009). In that case, a negligent
    misrepresentation claim survived “on life support,” in light of
    the fact that the Massachusetts courts had recently handled a
    similar case that way. See 
    id. at 494–96.
    Here we are presented
    with no such state authority on a negligent misrepresentation
    theory.
    No. 17-2146                                                    31
    C. Illinois Statutory Claims – The ICFA
    1. The Plaintiff Banks’ Claims
    We turn next to plaintiffs’ claims under Illinois statutes.
    (As noted, Missouri provides no statutory cause of action for
    financial institutions in retail data breaches.) The plaintiff
    banks allege that Schnucks violated the Illinois Consumer
    Fraud and Deceptive Business Practices Act (ICFA) by
    engaging in an unfair practice of having poor data security
    procedures. See 815 Ill. Comp. Stat. 505/2, 505/10a. The banks
    also allege that Schnucks violated the Illinois Personal
    Information Protection Act (PIPA), 815 Ill. Comp. Stat. 530/10,
    and point out that PIPA violations are identified by statute as
    per se unlawful practices actionable under the ICFA, 815 Ill.
    Comp. Stat. 530/20. We affirm the district court’s rejection of
    both theories in this case.
    2. Basic Elements of an ICFA Claim
    We first explain the relevant features of the ICFA before
    explaining why this claim fails as a matter of law. A plaintiff
    bringing a private claim under the ICFA must show five
    elements, the first of which is “a deceptive act or practice by
    the defendant.” Avery v. State Farm Mut. Auto. Ins. Co., 
    835 N.E.2d 801
    , 849–50 (Ill. 2005). Because the statute’s right of
    action is available to “Any person who suffers actual damage
    as a result of a violation,” 
    id., quoting 815
    Ill. Comp. Stat.
    505/10a(a), Illinois courts have interpreted the ICFA to apply
    not only in consumer-against-business cases but also in some
    cases when “both parties to the transaction are business
    entities.” Law Offices of William J. Stogsdill v. Cragin Fed. Bank
    for Savings, 
    645 N.E.2d 564
    , 566–67 (Ill. App. 1995). A mere
    breach of contract, though, “does not amount to a cause of
    32                                                             No. 17-2146
    action” under the ICFA, 
    id. at 567,
    even when the defendant
    systematically breaches many contracts across an entire
    “prospective plaintiff class,” Greenberger v. GEICO General
    Insurance Co., 
    631 F.3d 392
    , 400 (7th Cir. 2011).
    ICFA plaintiffs must identify “some stand-alone …
    fraudulent act or practice,” 
    id., and they
    must also show that
    the injury they seek to redress was “proximately caused by
    the alleged consumer fraud.” Connick v. Suzuki Motor Co., 
    675 N.E.2d 584
    , 594 (Ill. 1996), citing Stehl v. Brown’s Sporting
    Goods, Inc., 
    603 N.E.2d 48
    , 51–52 (Ill. App. 1992). ICFA
    plaintiffs cannot rely on a generalized “market theory” of
    causation claiming that the defendant “inflate[d] the cost of
    its product far above what it could have charged had the”
    defendant not “misled consumers.” De Bouse v. Bayer AG, 
    922 N.E.2d 309
    , 314–15 (Ill. 2009), citing Oliveira v. Amoco Oil Co.,
    
    776 N.E.2d 151
    , 155 (Ill. 2002). To show proximate cause, the
    “plaintiff must actually be deceived by a statement or
    omission that is made by the defendant;” the plaintiff cannot
    rest on vague accusations about inadequate disclosures and
    resulting price effects in the marketplace. De 
    Bouse, 922 N.E.2d at 316
    . 9
    9 In addition, plaintiffs in Illinois state court must plead fraud under
    the ICFA with the same level of specificity as under the common law. Con-
    
    nick, 675 N.E.2d at 593
    , citing People ex rel. Hartigan v. E & E Hauling, Inc.,
    
    607 N.E.2d 165
    , 174 (Ill. 1992). As a procedural matter we have held that
    ICFA complaints alleging an unfair practice in federal court should be
    judged under Federal Rule of Civil Procedure 8(a) and not the particular-
    ity requirement for fraud under Rule 9(b). Windy City Metal Fabricators &
    Supply, Inc. v. CIT Tech. Financing Services, Inc., 
    536 F.3d 663
    , 670 (7th Cir.
    2008). The ICFA’s heightened state court pleading requirement is still in-
    structive here for two reasons. First, we read the plaintiff banks’ complaint
    as invoking the misrepresentation and fraud line of ICFA cases, and not
    No. 17-2146                                                            33
    As mentioned above, the “any person” language in the
    ICFA means that businesses can sometimes sue one another
    under the statute, but a business plaintiff under the ICFA
    must show a “nexus between the complained of conduct and
    consumer protection concerns,” which we refer to here as the
    “consumer nexus test.” Athey Products Corp. v. Harris Bank
    Roselle, 
    89 F.3d 430
    , 437 (7th Cir. 1996). Illinois courts are
    skeptical of business-v.-business ICFA claims when neither
    party is actually a consumer in the transaction. ICFA claims
    may not be available when the business relationship is more
    like that of “partners” or “joint venturers” and not
    “consumers of each other’s services.” See Cragin Fed. 
    Bank, 645 N.E.2d at 566
    , citing Century Universal Enterprises, Inc. v. Triana
    Dev. Corp., 
    510 N.E.2d 1260
    (Ill. App. 1987). In applying the
    consumer nexus test, Illinois courts have observed that “there
    is no inherent consumer interest implicated in a construction
    contract between a general contractor and a subcontractor,”
    Peter J. Hartmann Co. v. Capital Bank and Trust Co., 
    694 N.E.2d 1108
    , 1117 (Ill. App. 1998) (citation omitted), a situation
    similar to the web of contracts that comprise the card payment
    system at issue here.
    But we need not decide here whether the plaintiff banks
    could ever establish a consumer nexus in an ICFA data breach
    claim. As a more preliminary matter, they fail to allege any
    ICFA violation in this lawsuit that would make that secondary
    consumer nexus determination necessary.
    the unfair practice cases, as described below. Second, we read this ICFA
    requirement as a sign that Illinois courts are cautious in recognizing new
    kinds of liability under the ICFA. See Con
    nick, 675 N.E.2d at 593
    –94.
    34                                                  No. 17-2146
    3. Unfair Practice Claim
    The plaintiff banks fail to allege an unfair practice under
    the ICFA because their theory is essentially a “market theory
    of causation” argument that Illinois courts have rejected. The
    complaint alleges that “Schnucks engaged in unfair business
    practices in violation of [the] ICFA by failing to implement
    and maintain reasonable payment card data security
    measures.” Am. Compl. ¶ 116. The complaint goes on to
    allege: “While Schnucks cut corners and minimized costs, its
    competitors spent the time and money necessary to ensure”
    the security of “sensitive payment card information.” 
    Id., ¶ 118.
    By not warning consumers or banks of its
    compromised payment system, this theory goes, Schnucks
    acted deceptively to maintain its prices and to ensure business
    as usual until it publicly announced the data breach. See Dkt.
    65 at 4.
    This argument does not support an ICFA claim. It is very
    similar to the argument the Illinois Supreme Court rejected in
    Oliveira v. Amoco Oil Co., where the plaintiff alleged that he
    paid an “‘artificially inflated’ price for … gasoline” due to the
    “defendant’s allegedly deceptive advertising 
    scheme.” 776 N.E.2d at 155
    . He also alleged that “all purchasers of Amoco’s
    premium gasolines were injured irrespective of whether [they
    saw] specific advertisements and marketing materials”
    because everyone “paid a higher price for the gasoline than
    they would have paid in the absence of the ads.” 
    Id. at 156.
    This could not support an ICFA claim, the Illinois Supreme
    Court later explained, because “plaintiffs in a class action”
    under the ICFA “must prove that ‘each and every consumer
    who seeks redress actually saw and was deceived by the
    statements in question.’” De 
    Bouse, 922 N.E.2d at 315
    , quoting
    No. 17-2146                                                               35
    Barbara’s Sales, Inc. v. Intel Corp., 
    879 N.E.2d 910
    , 927 (Ill. 2007).
    General effects on consumer behavior or the price of goods
    are not enough. See De 
    Bouse, 922 N.E.2d at 315
    . 10
    The plaintiff banks allege that Schnucks effectively
    manipulated both its prices and sales volume by deliberately
    concealing the data breach. This manipulation would not
    have been possible, say the banks, if Schnucks had told the
    truth about its data security. Dkt. 65 at 4. The banks admit that
    they did not “plead specific misrepresentations.” They argue
    instead that they do not need to—that alleging an unfair
    practice directed at the market in general is enough. By
    simply continuing business as usual as its consultant
    investigated the data breach, plaintiffs argue, Schnucks
    violated public policy and by extension the ICFA.11
    10  In 2006, which was after Oliveira but before De Bouse, the Illinois
    Appellate Court found that a consumer could state an ICFA claim where
    a manufacturer of aluminum-clad wooden windows failed to disclose
    physical defects in its product. Pappas v. Pella Corp., 
    844 N.E.2d 995
    , 1004
    (Ill. App. 2006). Pappas was not directly addressed by the Illinois Supreme
    Court in De Bouse, where the court relied on its own opinion in Oliveira
    and related cases. 
    See 922 N.E.2d at 314
    –16. We think the Illinois Supreme
    Court would take the same approach here and apply De Bouse and
    Oliveira, and not Pappas, to this case. The plaintiff banks’ claim is that
    Schnucks misrepresented the integrity of its data security policies and
    thus effectively mispriced its goods in the consumer market. It is not a
    claim about undisclosed physical product defects. Also, there is no third-
    party intermediary here, such as a doctor who passed along deceptive in-
    formation from the defendant. See De 
    Bouse, 922 N.E.2d at 318
    –19.
    11 To characterize their claim as an “unfair practice” rather than a
    misrepresentation, the plaintiff banks cite a district court decision that in
    turn quoted Robinson v. Toyota Motor Credit Corp., 
    775 N.E.2d 951
    , 961 (Ill.
    2002). Robinson adopted a three-factor test employed under the Federal
    Trade Commission Act in judging unfair practices, but it did not follow
    36                                                            No. 17-2146
    This theory is not consistent with Oliveira, which likened
    its plaintiff’s theory to “the fraud on the market theory found
    in federal securities case law” and rejected it for ICFA 
    claims. 776 N.E.2d at 155
    n.1, 164 (internal quotation omitted). An
    allegation that Schnucks mispriced its products and deceived
    all of its customers and also the plaintiff banks about its
    practices must actually identify a deceptive guarantee about
    data security in order to state an ICFA claim. Plaintiffs have
    not done so.
    4. Illinois Personal Information Protection Act
    It might be possible for the plaintiff banks to state a
    different kind of claim under the ICFA by alleging that
    Schnucks violated the Illinois Personal Information Protection
    Act by failing to disclose the breach for two weeks after
    learning of it. A violation of the PIPA can be sufficient to
    obtain ICFA relief. See 815 Ill. Comp. Stat. 530/20. The data
    breach occurred in this case, and PIPA requires notice to
    Illinois residents affected by data breaches. § 530/10. But the
    plaintiffs failed to explain to the district court whether and
    how Schnucks’ conduct fell under one of the operative
    subsections of the notice statute and not any of its exceptions.
    the sort of element-by-element analysis the plaintiff banks seek here. See
    
    id. at 961–64.
    Instead, Robinson analyzed the unfair practices claims by
    asking whether a disclosure law or public policy had been violated, see 
    id. at 962–63,
    or whether the plaintiff experienced “oppressiveness and lack
    of meaningful choice” in a manner similar to a contractual
    unconscionability claim, see 
    id. at 962.
    The plaintiff banks here do not
    identify a specific public policy violation or an unconscionability rationale
    that fits Schnucks’ conduct; instead, they maintain that “Schnucks
    deliberately concealed the ongoing data breach for over two weeks.” This
    is a misrepresentation allegation that claims the consumer market as a
    whole was deceived. We address it as such.
    No. 17-2146                                                     37
    See 
    id. Such an
    explanation was needed to preserve the PIPA-
    ICFA claim for appellate review, especially for a counseled
    class of sophisticated plaintiffs advocating a novel theory.
    The problem here is not the adequacy of pleadings but the
    adequacy of the legal argument in the district court. In
    responding to a motion to dismiss, “the non-moving party
    must proffer some legal basis to support his cause of action.”
    Bonte v. U.S. Bank, N.A., 
    624 F.3d 461
    , 466 (7th Cir. 2010),
    quoting County of McHenry v. Insurance Co. of the West, 
    438 F.3d 813
    , 818 (7th Cir. 2006). Courts “will not invent legal
    arguments for litigants,” even at the motion to dismiss stage,
    and are “not obliged to accept as true legal conclusions or
    unsupported conclusions of fact.” County of 
    McHenry, 438 F.3d at 818
    (citations omitted). This need stems not from the
    modest pleading requirements of Rule 8 but instead from the
    adversarial process. If a Rule 12 motion to dismiss is filed,
    plaintiffs must “specifically characterize or identify the legal
    basis” of their claims or face dismissal; just because the
    complaint may have complied with Rule 8 does not mean that
    it is “immune from a motion to dismiss.” See Kirksey v. R.J.
    Reynolds Tobacco Co., 
    168 F.3d 1039
    , 1041 (7th Cir. 1999).
    This is especially true when a party advances a novel legal
    theory. See 
    id. at 1042
    (“a claim that does not fit into an
    existing legal category requires more argument by the
    plaintiff to stave off dismissal, not less”). Our situation here is
    reminiscent of Kirksey, where the plaintiff’s lawyer seemed to
    have hoped “that the current legal ferment in the world of
    tobacco litigation”—or in this case data breach litigation—
    “will brew him up a theory at some future date if only he can
    stave off immediate dismissal under Rule 12(b)(6).” 
    Id. The failure
    to respond waives the claim. 
    Bonte, 624 F.3d at 466
    .
    38                                                    No. 17-2146
    The plaintiff banks argue that they asserted this claim
    properly in the district court. Their support is meager.
    Plaintiffs point to a footnote in the complaint that refers to a
    PIPA code section, see Am. Compl. ¶35 n.23, and a page and
    a half devoted to their ICFA claims in the brief opposing the
    motion to dismiss, Dkt. 65 at 18–19. These were not sufficient
    to alert the district court that plaintiffs were even relying on
    the theory they argue on appeal, let alone to explain the
    theory to the district court. Though plaintiffs summarized the
    connections between the federal FTCA and the ICFA, see Am.
    Compl. ¶ 115, they simply did not address the potential
    application of PIPA to this case in either filing.
    One district court case cited in the plaintiff banks’
    response mentions PIPA. Even if that were enough to alert the
    district judge to the issue—and it is certainly not—plaintiffs
    tried to distinguish that case, not to draw parallels to it. See
    Dkt. 65 at 18, distinguishing In re Michaels Stores Pin Pad Litig.,
    
    830 F. Supp. 2d 518
    (N.D. Ill. 2011) (brought by consumers).
    Rather, they argued that their ICFA “claim should stand for
    the same reasons as in Home Depot,” a case that does not
    mention PIPA or even cite the portion of Michaels that
    discussed PIPA. See Home Depot, 
    2016 WL 2897520
    , at *6.
    Nothing in this complaint or the plaintiffs’ briefing in the
    district court fairly alerted the district court that PIPA had any
    relevance.
    We will not revive this potential claim here. “Even if the
    argument was not waived … the [plaintiffs-appellants] failed
    to support it in this court with anything more than abstract
    generalities,” which is a sufficient reason not to wade into the
    issue. Hassebrock v. Bernhoft, 
    815 F.3d 334
    , 342 (7th Cir. 2016);
    see also Voelker v. Porsche Cars North Am., Inc., 
    353 F.3d 516
    , 527
    No. 17-2146                                                39
    (7th Cir. 2003) (under Fed. R. App. P. 28, “an appellant’s
    argument must provide both his ‘contentions and the reasons
    for them’” to be considered). Whether—and if so how—a
    PIPA violation could support an ICFA claim brought by one
    business against another is a question for another case.
    Conclusion
    We agree with the district court that neither Illinois nor
    Missouri would recognize any of the plaintiff banks’ theories
    to supplement their contractual remedies for losses they
    suffered as a result of the Schnucks data breach. The judgment
    dismissing the action is
    AFFIRMED.