United States v. James Ganzer, Jr. , 922 F.3d 579 ( 2019 )


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  •      Case: 17-51042   Document: 00514928710        Page: 1   Date Filed: 04/24/2019
    IN THE UNITED STATES COURT OF APPEALS
    FOR THE FIFTH CIRCUIT
    United States Court of Appeals
    Fifth Circuit
    No. 17-51042                         FILED
    April 24, 2019
    Lyle W. Cayce
    UNITED STATES OF AMERICA,                                                Clerk
    Plaintiff - Appellee
    v.
    JAMES KENNETH GANZER, JR.,
    Defendant - Appellant
    Appeal from the United States District Court
    for the Western District of Texas
    Before SMITH, DUNCAN, and ENGELHARDT, Circuit Judges.
    ENGELHARDT, Circuit Judge:
    This case is one of many filed around the country concerning the
    implications of a warrant issued in the Eastern District of Virginia (“EDVA”),
    which authorized the Federal Bureau of Investigation (“FBI”) to use certain
    malware to identify and prosecute users of a child-pornography website known
    as “Playpen” that operated on an anonymity network. Defendant-Appellant,
    James Kenneth Ganzer, Jr. (“Ganzer”), like dozens of others similarly-
    situated, moved the district court to suppress the evidence obtained against
    him as a result of the warrant, which led to his prosecution for possession of
    child pornography. He now appeals the district court’s denial of his motion.
    Case: 17-51042      Document: 00514928710      Page: 2    Date Filed: 04/24/2019
    No. 17-51042
    To date, eight of our sister circuits have addressed issues identical to
    those before us. See generally, United States v. Moorehead, 
    912 F.3d 963
     (6th
    Cir. 2019); United States v. Kienast, 
    907 F.3d 522
     (7th Cir. 2018), petition for
    cert. filed (U.S. Mar. 22, 2019) (No. 18-1248); United States v. Henderson, 
    906 F.3d 1109
     (9th Cir. 2018), petition for cert. filed (U.S. Apr. 1, 2019) (No. 18-
    8694); United States v. Werdene, 
    883 F.3d 204
     (3rd Cir. 2018), cert. denied, 
    139 S.Ct. 260
     (Oct. 1, 2018); United States v. McLamb, 
    880 F.3d 685
     (4th Cir. 2018),
    cert. denied, 
    139 S.Ct. 156
     (Oct. 1, 2018); United States v. Levin, 
    874 F.3d 316
    (1st Cir. 2017); United States v. Horton, 
    863 F.3d 1041
     (8th Cir. 2017), cert.
    denied, 
    138 S.Ct. 1440
     (Apr. 2, 2018); and United States v. Workman, 
    863 F.3d 1313
     (10th Cir. 2017), cert. denied, 
    138 S.Ct. 1546
     (Apr. 16, 2018).
    For the reasons set forth herein, we now join each of those circuits in
    holding that the good-faith exception to the exclusionary rule set forth in
    United States v. Leon, 
    468 U.S. 897
     (1984), applies to save the fruits of the
    warrant at issue from suppression.         Accordingly, we AFFIRM the district
    court’s denial of Ganzer’s motion to suppress.
    I.
    In December of 2014, the FBI learned from a foreign law enforcement
    agency that a United States-based Internet Protocol (“IP”) address was
    associated with the child-pornography website Playpen. A search warrant
    obtained in January of 2015 allowed FBI agents to seize a copy of the server
    that was assigned the suspect IP address; 1 determine that the IP address in
    fact contained a copy of Playpen; and place a copy of the server on a computer
    server at a government facility in the EDVA. Subsequently, the FBI was able
    to apprehend the administrator of Playpen at his home in Naples, Florida and
    1  The computer server hosting Playpen was seized from a web-hosting facility in
    Lenoir, North Carolina.
    2
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    assume control of the website. For investigative purposes, the FBI continued
    to operate the website from the government-controlled server in the EDVA for
    a limited period of time.
    Playpen operated on an anonymity network known as “The Onion
    Router” or “Tor.” 2 Tor software, which is publicly accessible, protects the
    privacy of network users by “bouncing their communications around a
    distributed network of relay computers run by volunteers all around the world,
    thereby masking the user’s actual IP address.” This feature made it impossible
    for federal agents to determine the identities of the administrators and users
    of Playpen without employing additional investigative techniques.
    Accordingly, the FBI requested and obtained a warrant from a
    magistrate judge in the EDVA (“the EDVA magistrate”), which allowed it to
    deploy a Network Investigative Technique (“NIT”) from the government-
    controlled server in the EDVA. (Such warrant will hereinafter be referred to
    as the “NIT warrant.”) The NIT was a form of malware that augmented the
    content sent by Playpen to the computers of Playpen users with directions
    instructing those computers to send identifying information to a computer
    controlled by the government. Specifically, per the terms of the NIT warrant,
    the NIT collected the following information from each computer used to login
    into Playpen: the computer’s IP address and when the NIT determined same;
    a unique identifier for the computer generated by the NIT; the type of
    operating system used by the computer and the operating system’s active
    username; whether the NIT had already been sent to the computer; the
    computer’s host name; and the computer’s media access control.
    2  The network, a project of the United States Naval Research Laboratory, was
    originally designed and used to protect government communications but is now available to
    the public.
    3
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    Through its use of the NIT, the FBI was able to link a Playpen user
    operating under the username of “marleyboy” with an IP address that it later
    determined was associated with an individual named Robert Ahr (“Ahr”)
    residing in Austin, Texas. With this and other information, the FBI obtained
    a warrant from a magistrate judge in the Western District of Texas allowing a
    search of Ahr’s residence. 3 Both Ahr and Ganzer were present at the time
    federal agents executed the warrant. Ahr denied any involvement with child
    pornography.      Ganzer, on the other hand, agreed to be interviewed and
    admitted to using his laptop to view child pornography and access Playpen
    under the username “marleyboy.”                  He subsequently confirmed these
    admissions in writing during an interview at the Austin Police Station. A
    preliminary examination of Ganzer’s laptop revealed approximately 61 video
    files and 16,546 images containing child pornography. On December 20, 2016,
    an indictment was filed in the United States District Court for the Western
    District of Texas charging Ganzer with possession of child pornography in
    violation of 18 U.S.C. § 2252A(a)(5)(B) and (b)(2).
    In advance of his trial date, Ganzer filed a motion to suppress “the
    evidence illegally obtained during the search of his home and all fruits of this
    illegal search, including, but not limited to, inculpatory statements Ganzer
    made to police”—all of which he contended was discovered as a result of the
    NIT warrant.       Ganzer argued that the NIT warrant, which allowed the
    government “to deploy malware to search [his] computer in Texas and
    countless computers all over the world . . . was invalid because it (1) violated
    the Federal Magistrate’s Act, (2) violated Rule 41(b) of the Federal Rules of
    3 Warrants similar to the warrant issued in the Western District of Texas have issued
    around the country as a result of the NIT warrant, spawning a multitude of challenges in
    federal courts to the validity of the NIT warrant. See United States v. Taylor, 
    250 F. Supp. 3d 1215
    , 1222–23 (N.D. Ala. 2017) (compiling cases).
    4
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    Criminal Procedure, and (3) lacked particularity.” Ganzer also argued that
    even if the NIT warrant was valid, its scope was limited to computers in the
    EDVA and, therefore, did not extend to his computer in Texas. Additionally,
    he urged that the good-faith exception to the exclusionary rule recognized by
    the Supreme Court in United States v. Leon, 
    468 U.S. 897
     (1984), is
    inapplicable with respect to the NIT warrant, since the warrant was issued
    without jurisdiction, and its constitutional defects were so obvious that a
    reasonable law enforcement officer could not rely upon it.
    The district court denied Ganzer’s motion to suppress. The court agreed
    with Ganzer that the issuance of the NIT warrant violated § 636(a) of the
    Federal Magistrates Act (“§ 636(a)”), 4 
    28 U.S.C. § 636
    , and Rule 41(b) of the
    Federal Rules of Criminal Procedure (“Rule 41(b)”), 5 finding that the warrant
    impermissibly authorized a search of Ganzer’s computer outside of the EDVA
    4  Section 636(a), a jurisdictional statute, provides in pertinent part:
    Each United States magistrate judge serving under this chapter shall have
    within the district in which sessions are held by the court that appointed the
    magistrate judge, at other places where that court may function, and elsewhere
    as authorized by law—(1) all powers and duties conferred or imposed upon
    United States commissioners by law or by the Rules of Criminal Procedure for
    the United States District Courts.
    
    28 U.S.C. § 636
    (a)(1).
    5 Rule 41(b), titled “Authority to Issue a Warrant,” generally provides that a
    magistrate judge “has authority to issue a warrant to search for and seize a person or
    property located within [his or her] district.” FED. R. CRIM. P. 41(b)(1). The rule also allows
    a magistrate judge to issue a warrant pertaining to a person or property outside of his or her
    district under certain specified circumstances. FED. R. CRIM. P. 41(b). Two of those
    circumstances—those referenced in Rule 41(b)(2) and (b)(4)—were potentially relevant to the
    NIT warrant at the time of its issuance. Rule 41(b)(2) provides that “a magistrate judge with
    authority in the district has authority to issue a warrant for a person or property outside the
    district if the person or property is located within the district when the warrant is issued but
    might move or be moved outside the district before the warrant is executed.” FED. R. CRIM.
    P. 41(b)(2). Rule 41(b)(4) provides that “a magistrate judge with authority in the district has
    authority to issue a warrant to install within the district a tracking device; the warrant may
    authorize use of the device to track the movement of a person or property located within the
    district, outside the district, or both.” FED. R. CRIM. P. 41(b)(4).
    5
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    magistrate’s district. 6 Nevertheless, the court concluded that suppression was
    not warranted since the Leon good-faith exception to the exclusionary rule
    applied. After his motion to suppress was denied, Ganzer pleaded guilty to the
    charge against him, specifically reserving in his plea agreement the right to
    appeal the motion’s denial, and was sentenced to 60 months of imprisonment,
    followed by ten years of supervised release. This appeal followed.
    II.
    “When examining a district court’s ruling on a motion to suppress, we
    review questions of law de novo and factual findings for clear error,” viewing
    the evidence “in the light most favorable to the prevailing party.” United States
    v. Wallace, 
    885 F.3d 806
    , 809 (5th Cir. 2018) (internal quotation marks and
    citations omitted). We will “uphold a district court’s denial of a suppression
    motion if there is any reasonable view of the evidence to support it.” United
    States v. Contreras, 
    905 F.3d 853
    , 857 (5th Cir. 2018) (quoting United States v.
    Michelletti, 
    13 F.3d 838
    , 841 (5th Cir. 1994) (en banc)). Along these lines, “[w]e
    may affirm the district court’s ruling on a motion to suppress based on any
    rationale supported by the record.” Wallace, 885 F.3d at 809 (quoting United
    States v. Waldrop, 
    404 F.3d 365
    , 368 (5th Cir. 2005)).
    III.
    On appeal, Ganzer claims that the district court correctly concluded that
    the EDVA magistrate did not have authority to issue the NIT warrant under §
    636(a) and Rule 41(b), since the warrant authorized a search of computers
    6  In reaching its conclusion, the district court found that the NIT warrant did not fit
    within Rule 41(b)(2) or (b)(4), either of which would allow it to have extraterritorial effect.
    Specifically, the district court found that “logging into a website, the server for which is in
    the appropriate district, does not rise to the level of the computer being ‘located within the
    district’ [as required by Rule 41(b)(2)].” With respect to the applicability of Rule 41(b)(4), the
    district court rejected the notion that the NIT was a “tracking device,” finding that “[t]he NIT
    is not a device, but a technique” and that it “did not ‘track’ Ganzer’s computer under the
    ordinary understanding of the word ‘track.’”
    6
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    outside of her jurisdiction. He contends that the court erred, however, in
    determining that the good-faith exception to suppression is applicable under
    the circumstances of this case. First, Ganzer asserts that because the EDVA
    magistrate did not have jurisdiction to issue the NIT warrant, the warrant was
    void ab initio, making the searches conducted pursuant to it akin to
    warrantless searches. He states that the Supreme Court has never extended
    the good-faith exception to apply in the context of a warrant so-categorized.
    Ganzer recognizes that all other circuit courts to address challenges to the NIT
    warrant have found the good-faith exception to be applicable but maintains
    that those courts reached the incorrect result and urges this court to decline to
    extend the exception to cases involving warrants that are void ab initio. 7
    Ganzer next argues that, in any event, the good-faith exception should
    not apply here because the government “acted recklessly or with gross
    negligence” in seeking the NIT warrant, since it knew that Rule 41(b) did not
    allow for its issuance. As discussed in more detail below, Ganzer supports this
    assertion by pointing to pre-NIT-warrant efforts of the Department of Justice
    (“DOJ”) to have Rule 41(b) amended to permit magistrates to issue warrants
    authorizing the use of remote-access investigative techniques.                        Ganzer
    consequently concludes that suppressing the evidence at issue in this case will
    serve the goal of deterrence by discouraging the government from asking
    magistrate judges to issue warrants that it knows they do not have jurisdiction
    to issue.
    7 The appellate court cases that had addressed the propriety of the NIT warrant and
    suppression of its fruits at the time the parties’ briefs were filed are: Werdene, 
    883 F.3d 204
    ;
    McLamb, 
    880 F.3d 685
    ; Levin, 
    874 F.3d 316
    ; Horton, 
    863 F.3d 1041
    ; and Workman, 
    863 F.3d 1313
    . Three additional circuits took up these issues following the briefing in this case, and,
    for the most part, resolved the issues like the circuits that had previously addressed them.
    See Moorehead, 
    912 F.3d 963
    ; Kienast, 
    907 F.3d 522
    ; Henderson, 
    906 F.3d 1109
    .
    7
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    For its part, the government makes little effort to defend the validity of
    the warrant. Instead, it focuses on the applicability of the good-faith exception
    and urges us to follow the lead of the other circuits courts that have addressed
    the issue.
    IV.
    A.
    Because the primary focus of the parties’ briefing is on the good-faith
    exception to the exclusionary rule and because we conclude that the exception
    is applicable here, we decline to address the merits of whether the EDVA
    magistrate had legal authority to issue the NIT warrant and assume, without
    deciding, that she lacked such authority. We further assume that a Fourth
    Amendment violation occurred as a result of the warrant’s issuance. Thus, we
    proceed directly to our discussion of the good-faith exception and the propriety
    of its application in the context of this case.
    The exclusionary rule was created by the Supreme Court to “supplement
    the bare text” of the Fourth Amendment, which “protects the right to be free
    from ‘unreasonable searches and seizures,’ but . . . is silent about how this right
    is to be enforced.” Davis v. United States, 
    564 U.S. 229
    , 231 (2011). It operates
    by generally “bar[ring] the prosecution from introducing evidence obtained by
    way of a Fourth Amendment violation.” 
    Id.
     The purpose of the rule is to deter
    violations of the Fourth Amendment—not to redress the injury of the victim of
    an unreasonable search or seizure. 
    Id.
     at 236–37. Thus, application of the rule
    is “not a personal constitutional right.” 
    Id. at 236
     (quoting Stone v. Powell, 
    428 U.S. 465
    , 486 (1976)). Nor is it automatic in the face of a Fourth Amendment
    violation. Herring v. United States, 
    555 U.S. 135
    , 140 (2009) (citing Illinois v.
    Gates, 
    462 U.S. 213
    , 223 (1983)).
    Expounding upon on these principles and following an evolving line of
    cases in which it had developed a cost-benefit balancing approach to
    8
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    application of the exclusionary rule, the Supreme Court officially recognized a
    “good-faith” exception to the rule in United States v. Leon. 
    468 U.S. at
    907–
    913. The Leon Court narrowly defined the exception as allowing admission at
    trial of “evidence obtained by officers acting in reasonable reliance on a search
    warrant issued by a detached and neutral magistrate” but later invalidated.
    
    Id. at 900
    . The Court, however, invoked broader Fourth Amendment and
    exclusionary-rule principles in arriving at its holding.              In particular, and
    relevant to the case before us, the Court emphasized that “the exclusionary
    rule is designed to deter police misconduct”—not judicial errors or misconduct. 8
    
    Id. at 916
    . On the flip side, the Court noted, “it cannot be expected, and should
    not be applied, to deter objectively reasonable law enforcement activity.” 
    Id. at 919
    . Indeed, where “the officer is acting as a reasonable officer would and
    should act in similar circumstances,” “excluding the evidence will not further
    the ends of the exclusionary rule in any appreciable way.” 
    Id. at 920
     (internal
    quotation marks and citation excluded).
    In conducting its analysis, the Leon Court further pointed to the
    “substantial social costs exacted by the exclusionary rule for the vindication of
    Fourth Amendment rights”—namely, “guilty defendants go[ing] free or
    receiv[ing] reduced sentences as a result of favorable plea bargains.” 
    Id. at 907
    . “Particularly when law enforcement officers have acted in objective good
    8Specifically, the Court explained:
    Many of the factors that indicate that the exclusionary rule cannot provide an
    effective “special” or “general” deterrent for individual offending law
    enforcement officers apply as well to judges or magistrates. And, to the extent
    that the rule is thought to operate as a “systemic” deterrent on a wider
    audience, it clearly can have no such effect on individuals empowered to issue
    search warrants. Judges and magistrates are not adjuncts to the law
    enforcement team; as neutral judicial officers, they have no stake in the
    outcome of particular criminal prosecutions. The threat of exclusion thus
    cannot be expected significantly to deter them.
    Leon, 
    468 U.S. at 916-17
    .
    9
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    faith or their transgressions have been minor,” the Court noted, “the
    magnitude of the benefit conferred on such guilty defendants offends basic
    concepts of the criminal justice system.” 
    Id.
     at 907–08. Ultimately, the Court
    concluded that its “evaluation of the costs and benefits of suppressing reliable
    physical evidence seized by officers reasonably relying on a warrant issued by
    a detached and neutral magistrate” compelled “the conclusion that such
    evidence should be admissible in the prosecution’s case in chief.” 
    Id. at 913
    .
    The Court clarified, however, that suppression remains an appropriate remedy
    where “it is clear that . . . the officer [had] no reasonable grounds for believing
    that the warrant was properly issued.” 9 
    Id.
     at 922–23.
    Since its inception, the Supreme Court has expanded the reach of the
    good-faith exception to other contexts. See, e.g., Davis, 
    564 U.S. at 232
    , 238–
    40 (discussing a line of Supreme Court cases applying the good-faith exception
    and extending application of the exception to searches conducted “in objectively
    reasonable reliance on binding appellate precedent” that is later overruled);
    Herring, 
    555 U.S. at
    137–38, 144, 147–48 (applying the good-faith exception
    where police reasonably relied upon a computer database record that, due to
    the negligence of a police employee, showed a recalled warrant to still be in
    effect); Arizona v. Evans, 
    514 U.S. 1
    , 3–4, 15–16 (1995) (applying the good-faith
    exception where an officer who conducted a search incident to an arrest had
    reasonably relied on an electronic police record that, due to a clerical error,
    indicated that a quashed arrest warrant remained outstanding); Illinois v.
    Krull, 
    480 U.S. 340
    , 342, 349–50 (1987) (extending application of the good-faith
    exception to searches conducted in reasonable reliance on subsequently
    9 As discussed supra, the Court laid out four specific scenarios in which it would be
    clear that the law enforcement official involved had “no reasonable grounds for believing that
    the warrant was properly issued.” Id. at 922–23.
    10
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    invalidated statutes). In Davis, the Supreme Court summarized the core of its
    post-Leon exclusionary-rule holdings as follows:
    [T]he deterrence benefits of exclusion vary with the culpability of
    the law enforcement conduct at issue. When the police exhibit
    deliberate, reckless, or grossly negligent disregard for Fourth
    Amendment rights, the deterrent value of exclusion is strong and
    tends to outweigh the resulting costs. But when police act with an
    objectively reasonable good-faith belief that their conduct is
    lawful, or when their conduct involves only simple, isolated
    negligence, the deterrence rationale loses much of its force, and
    exclusion cannot pay its way.
    Davis, 
    564 U.S. at 238
     (internal quotation marks and citations omitted).
    B.
    As previously indicated, Ganzer’s primary argument on appeal is that
    the good-faith exception categorically cannot apply under circumstances where
    a warrant is void ab initio—a description he gives to the NIT warrant. Ganzer
    does not cite any authority in support of his proposition. Instead, he relies on
    the fact that the Supreme Court has not specifically considered and applied
    the good-faith exception in the context of a warrant that is void from its
    inception. He further insists, without explanation, that warrants that are void
    ab initio have a defect that is “fundamental” and, therefore, require unique
    treatment in a good-faith exception analysis. Having assumed that the EDVA
    magistrate lacked statutory authority to issue the NIT warrant, we will also
    assume, for argument’s sake, that the warrant was void ab initio and,
    therefore, never had any legal effect. Even with these assumptions, Ganzer’s
    argument fails.
    As the Supreme Court has recognized, whether a Fourth Amendment
    violation exists and what type of violation is present are separate and distinct
    questions from the question of whether the sanction of exclusion is appropriate
    in a certain case. See Leon, 
    468 U.S. at 906
     (“The wrong condemned by the
    11
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    [Fourth] Amendment is ‘fully accomplished’ by the unlawful search or seizure
    itself, . . . and the exclusionary rule is neither intended nor able to ‘cure the
    invasion of the defendant’s rights which he has already suffered.’” (quoting
    Stone, 
    428 U.S. at 540
    )). The fundamental flaw in Ganzer’s argument is that
    it improperly focuses the exclusion inquiry on the character of the underlying
    Fourth Amendment violation, as opposed to whether exclusion would
    sufficiently further the purpose of the Fourth Amendment. See Herring, 
    555 U.S. at 141
     (“[T]he exclusionary rule . . . applies only where it results in
    appreciable deterrence.” (internal quotation marks and citation omitted)). The
    latter question is answered by looking at “the culpability of the law
    enforcement conduct.” Herring, 
    555 U.S. at 143
    .
    With the focus properly on the behavior of the law enforcement officials
    involved, there is no reason to distinguish warrants that are void ab initio from
    warrants that are later invalidated or recalled, or even from later-invalidated
    precedent or statutes—each of which, the Supreme Court has held, can be
    reasonably relied upon by officers in conducting a search. See Leon, 
    468 U.S. at 900
    ; Herring, 
    555 U.S. at
    137–38, 144, 147–48; Davis, 
    564 U.S. at 232
    , 238-
    40; Krull, 
    480 U.S. at 342
    , 349–50. In other words, the conduct of an officer
    who reasonably and in good faith relies on a warrant issued by a magistrate
    lacking jurisdiction to issue it is no more culpable than that of an officer who
    reasonably and in good faith relies, for instance, on a faulty indication in a
    database that a recalled warrant remains outstanding. See Herring, 
    555 U.S. at
    137–38, 144, 147–48. See also Werdene, 883 F.3d at 216 (“[T]he issuing
    magistrate’s lack of authority has no impact on police misconduct, if the officers
    mistakenly, but inadvertently, presented the warrant to an innocent
    magistrate.” (citation omitted)); Henderson, 906 F.3d at 1118 (holding that
    “[a]pplication of the good faith exception does not depend on the existence of a
    warrant, but on the executing officer’s objectively reasonable belief that there
    12
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    was a valid warrant”). Therefore, we reject Ganzer’s argument that the good-
    faith exception to the exclusionary rule categorically cannot apply to warrants
    that are void ab initio. 10 This holding is in accordance with the well-reasoned
    decisions of each of our sister circuits to have considered this issue in the
    context of the NIT warrant. See Moorehead, 912 F.3d at 968–69; Kienast, 907
    F.3d at 527–28; Henderson, 906 F.3d at 1118–19; Werdene, 883 F.3d at 216–
    17; McLamb, 880 F.3d at 691; Horton, 863 F.3d at 1050–51; Workman, 863
    F.3d at 1317–19.
    C.
    Having concluded that the good-faith exception can apply in
    circumstances involving a warrant that is void ab initio, we turn to the
    question of whether the exception can properly be applied under the facts of
    this case, again presuming that the EDVA magistrate lacked statutory
    authority to issue the NIT warrant. As previously noted, Ganzer asserts that
    the exception does not apply because of the government’s lack of good faith.
    Specifically, he argues that the government acted either “recklessly or with
    gross negligence in seeking the [NIT] warrant,” since it knew the warrant it
    sought was “beyond the scope of Rule 41(b).” He contends that such knowledge
    is demonstrated by efforts of the DOJ well before the NIT warrant was issued
    to have Rule 41(b) amended to specifically allow for warrants like the NIT
    10 We add that although this court has not specifically addressed the issue of
    applicability of the good-faith exception to warrants that are void ab initio, it has recognized
    that the exception can apply in the case of a warrantless search. See United States v. De
    Leon-Reyna, 
    898 F.2d 486
    , 491 (5th Cir. 1990) (citing United States v. Williams, 
    622 F.2d 830
    ,
    840 n.1 (5th Cir. 1980) (en banc)); United States v. Comstock, 
    805 F.2d 1194
    , 1210 n.18 (5th
    Cir. 1986) (recognizing that reliance on a magistrate is not a requirement for applicability of
    the good-faith exception). If the good-faith exception can save the fruits of an illegal search
    from suppression where no warrant was issued, then, logically, the classification of a warrant
    as “void ab initio” should have no bearing on the applicability of the exception in this circuit.
    For this reason too, we find Ganzer’s argument to be without merit.
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    warrant. 11 Ganzer claims that these efforts resulted from the refusal of a
    magistrate judge in the Southern District of Texas to issue a similar warrant
    in the context of a fraud investigation. See In re Warrant to Search a Target
    Computer at Premises Unknown, 
    958 F. Supp. 2d 753
     (S.D. Tex. 2013).
    According to Ganzer, “the fact that the DOJ took specific and concrete action
    in response to that decision demonstrates an official recognition on the part of
    the federal law enforcement apparatus as a whole that the decision set forth
    the correct interpretation of Rule 41’s limits in this setting;” and, therefore,
    federal agents could not have acted in good faith in requesting the NIT
    warrant. We disagree with Ganzer’s assessment.
    Preliminarily, we note that in Leon, the Supreme Court identified four
    situations that would indicate the presence of bad faith and call for application
    of the exclusionary rule, despite a warrant having been issued:                     1) “the
    magistrate or judge in issuing [the] warrant was misled by information in an
    11 In support of his contention, Ganzer points to a letter dated September 23, 2013
    from the DOJ to the chair of the Advisory Committee on the Criminal Rules requesting an
    amendment that would “authorize[] a court in a district where activities related to a crime
    have occurred to issue a warrant—to be executed via remote access—for electronic storage
    media and electronically stored information located within or outside that district.” Mythili
    Raman, Letter to the Honorable Reena Raggi, in Advisory Committee on Criminal Rules,
    Materials     for   April   7-8,   2014      Meeting    at   171    (2013);   available    at
    http://www.uscourts.gov/sites/default/files/fr_import/CR2014-04.pdf. According to the letter,
    “[t]he proposed amendment would better enable law enforcement to investigate and
    prosecute botnets and crimes involving Internet anonymizing technologies.” See Raman
    letter at 171. Ganzer further points out that at an April 7-8, 2014 meeting of the Advisory
    Committee on Criminal Rules, a DOJ representative acknowledged that Rule 41(b) “on its
    face does not work with” crimes involving anonymizing networks, like Tor, and suggested
    that, absent the requested amendment, the government would be left to litigate the issue and
    “hope the courts [would] create an exception to the rule.” Advisory Committee on Criminal
    Rules,       Minutes       at     13        (Apr.      7-8,     2014);      available      at
    http://www.uscourts.gov/sites/default/files/fr_import/criminal-min-04-2014.pdf.          The
    government does not dispute that these interactions occurred or the DOJ’s efforts to have
    Rule 41(b) amended. Notably, Rule 41(b) was eventually amended to specifically allow for
    warrants like the NIT warrant. However, this amendment did not take effect until December
    1, 2016—almost two years after the NIT warrant’s issuance.
    14
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    No. 17-51042
    affidavit that the affiant knew was false or would have known was false except
    for his reckless disregard of the truth”; 2) “the issuing magistrate wholly
    abandoned his judicial role”; 3) the “affidavit [in support of the warrant is] so
    lacking in indicia of probable cause as to render official belief in its existence
    entirely unreasonable”; and 4) the “warrant [is] so facially deficient—i.e., in
    failing to particularize the place to be searched or the things to be seized—that
    the executing officers cannot reasonably presume it to be valid.” 
    468 U.S. at 923
     (internal quotation marks and citations omitted). The challenge posed by
    Ganzer does not correspond to any of these scenarios, and we do not find it to
    be otherwise compelling.
    To be sure, whether the NIT warrant’s issuance was legitimate under §
    626(a) and Rule 41(b) was questionable at the time it was issued.             The
    government does not dispute this. This is because the NIT warrant “pose[d]
    difficult conceptual questions” regarding the search that it authorized.
    Kienast, 907 F.3d at 528. The NIT was a “sophisticated tool” developed by the
    FBI in a world of rapidly changing cyber technology in response to the
    “daunting task of [unmasking, locating, and] apprehending tens of thousands
    of individuals engaged in perverse crimes but cloaked in anonymity through
    their use of Tor.” Id. at 529. Whether this new technology fit within the bounds
    of Rule 41(b) when it was developed was not readily apparent, particularly
    given that there was no federal appellate court precedent regarding the
    permissibility of remote-access investigative techniques at the time. McLamb,
    880 F.3d at 689, 691. That being said, it was neither plain nor obvious that
    NIT warrant could not properly be issued under Rule 41(b). This is confirmed
    by the fact that several federal district courts have concluded that the EDVA
    magistrate had authority to issue the warrant under Rule 41(b)(4) concerning
    “tracking device[s].” See United States v. Austin, 
    230 F. Supp. 3d 828
    , 832–34
    15
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    No. 17-51042
    (M.D. Ten. 2017) (collecting cases and concluding that the NIT constitutes a
    “tracking device” within the meaning of Rule 41(b)(4)).
    Under these circumstances, we do not construe the government’s efforts
    to have Rule 41(b) amended to specifically allow for warrants like the NIT
    warrant as an admission that such warrants were not previously allowed, but
    rather as an attempt to clarify an existing law’s application to new
    circumstances. The government did not act unreasonably in seeking such a
    clarification.   We note that this conclusion is consistent with the Fourth
    Circuit’s holding in McLamb with respect to a similar argument by the
    appellant. In McLamb, the appellant argued that the FBI’s consultation with
    DOJ attorneys prior to seeking the NIT warrant regarding such a warrant’s
    legality demonstrated a “guilty conscience” on the part of the FBI.           See
    McLamb, 880 F.3d at 691. The court rejected this argument, instructing that
    where there is not “definitive precedent upon which law enforcement can rely
    when utilizing cutting edge investigative techniques . . . consultation with
    government attorneys is precisely what Leon’s ‘good faith’ expects of law
    enforcement.”     Id.   See also Moorehead, 912 F.3d at 970 (rejecting the
    appellant’s argument that government attempts to have Rule 41(b) amended
    demonstrated knowledge of the NIT warrant’s illegality).           Likewise, we
    conclude that the government acted in accordance with the expectations of the
    Fourth Amendment by seeking to clarify the bounds of an imprecise statutory
    grant of authority in the face of advancing technology.
    Moreover, we do not otherwise detect foul play in the process by which
    the FBI sought the NIT warrant. As the First Circuit aptly recognized in
    Levin:
    Faced with the novel question of whether an NIT warrant can
    issue—for which there was no precedent on point—the government
    turned to the courts for guidance. The government presented the
    magistrate judge with a request for a warrant, containing a
    16
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    No. 17-51042
    detailed affidavit from an experienced officer, describing in detail
    its investigation, including how the NIT works, which places were
    to be searched, and which information was to be seized.
    874 F.3d at 323. Like the Levin court, “[w]e see no benefit in deterring such
    conduct” and agree that, “if anything, such conduct should be encouraged,
    because it leaves it to the courts to resolve novel legal issues.” Id. See also
    Workman, 863 F.3d at 1320–21 (concluding that it was reasonable for the
    federal agents who applied for and executed the NIT warrant to “defer to the
    magistrate judge on . . . nuanced legal issues”). To the extent that the EDVA
    magistrate erred in issuing the NIT warrant, as we have noted, such an error
    is not within the purview of the exclusionary rule. See Leon, 
    468 U.S. at 916
    .
    In light of the foregoing, we reject Ganzer’s assertion that the good-faith
    exception cannot apply under the facts of this case due to bad faith, gross
    negligence or reckless conduct by the government officials involved. To the
    contrary, we conclude that the law enforcement officials involved in the
    issuance and execution of the NIT warrant acted “with an objectively
    reasonable good-faith belief that their conduct [was] lawful.” Davis, 
    564 U.S. at 238
     (internal quotation marks and citations omitted). Again, our conclusion
    is consistent with the holdings of each of our sister circuits to have considered
    challenges to the NIT warrant. See Moorehead, 912 F.3d at 970–71; Kienast,
    907 F.3d at 528–29; Henderson, 906 F.3d at 1119; Werdene, 883 F.3d at 217–
    18; McLamb, 880 F.3d at 690–91; Levin, 874 F.3d at 322–4; Horton, 863 F.3d
    at 1051–52; Workman, 863 F.3d at 1319–21.
    V.
    Considering the reasonable behavior on the part of the federal agents
    involved in seeking and executing the NIT warrant, we do not ascertain any
    deterrence benefit to be derived from applying the exclusionary rule here,
    much less one that would outweigh the substantial cost that would result from
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    applying the rule, i.e., the inability to effectively prosecute potentially
    thousands of Playpen users. Herring, 
    555 U.S. at 141
     (“To the extent that
    application of the exclusionary rule could provide some incremental deterrent
    [to Fourth Amendment violations], that possible benefit must be weighed
    against its substantial social costs.” (quoting Krull, 
    480 U.S. at
    352–53)).
    Accordingly, we hold that the good-faith exception to the exclusionary
    rule is applicable to the NIT warrant and its fruits and, therefore, AFFIRM
    the district court’s denial of Ganzer’s motion to suppress.
    18