United States of America v. Sean Fiore

CourtDistrict Court, D. Vermont
DecidedOctober 28, 2025
Docket2:23-cv-00220
StatusUnknown

This text of United States of America v. Sean Fiore (United States of America v. Sean Fiore) is published on Counsel Stack Legal Research, covering District Court, D. Vermont primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
United States of America v. Sean Fiore, (D. Vt. 2025).

Opinion

US. DISTRICT COURT VISTRICT OF □□□□□□ FILED □ UNITED STATES DISTRICT COURT ? FOR THE O25 OCT 28 PM □□ 12 DISTRICT OF VERMONT CLERK ay UW UNITED STATES OF AMERICA "DEPUTY CLERK V. ) Case No. 2:19-cr-00078-1 ) SEAN FIORE, ) Defendant. ) OPINION AND ORDER DENYING DEFENDANT SEAN FIORE’S MOTION TO VACATE, SET ASIDE, OR CORRECT SENTENCE PURSUANT TO 28 U.S.C. § 2255 (Doc. 263) Pending before the court is Defendant Sean Fiore’s motion to vacate, set aside, or correct sentence pursuant to 28 U.S.C. § 2255. (Doc. 263.) Mr. Fiore contends he is entitled to relief because his defense counsel provided him with constitutionally ineffective assistance of counsel by failing to file additional motions to suppress. Mr. Fiore, who was self-represented when he filed his motion, is represented by Chandler W. Matson, Esq., as court-appointed counsel. The government is represented by Assistant United States Attorneys Eduardo A. Palomo and Patrick Jasperse. I. Factual and Procedural Background. On March 25, 2019, Homeland Security Investigations (“HSI”) Special Agent (“SA”) Caitlin Moynihan identified a device located at an IP address assigned to Mr. Fiore’s residence that was associated with a file believed to contain child sexual abuse material (““CSAM”). Details of SA Moynihan’s investigation were included in her affidavit in support of a search warrant for Mr. Fiore’s residence: On March 25, 2019, [SA Moynihan] was conducting an online investigation on the BitTorrent network for offenders sharing child pornography. [She] initiated an investigation for a device at IP address 98.229.2.46 because it was associated with a torrent with the infohash: 32b58a925d17918f26a8 1 59bce427c1e41458793. This torrent references one file which ha[d] been identified as being a file of investigative interest to child pornography investigations. Files of investigative interest are files

that have been previously identified by law enforcement officers as files containing child exploitative material based on their SHA values. [] Using a computer running investigative BitTorrent software, [SA Moynihan] directly connected to the device at IP address 98.229.2.46. The user’s bit Torrent software reported itself as: - UM1870-yTorrentMac 1.8.7. [] On Monday, March 25, 2019, between 1343 and 1434 EDT hours, [SA Moynihan] downloaded one incomplete file that the device at IP address 98.229.2.46 was making available. [She] viewed this file and consider[ed] it to contain child pornography. [] The device at IP address 98.229.2.46 was the sole candidate for the download, and as such, the file was downloaded directly from IP address 98.229 .2.46. (Doc. 319-1 at 8, {4 11-13(a).) The investigative BitTorrent software used by the government, Torrential Downpour, “is a law enforcement surveillance software that is used exclusively by law enforcement. It is used to track, investigate, and eventually arrest those sharing child pornography through various [peer-to-peer] sharing networks.” United States v. Maurek, 131 F. Supp. 3d 1258, 1261 (W.D. Okla. 2015).' Torrential Downpour “roams the internet and queries publicly available BitTorrent indices searching for IP addresses that have made public requests for specified torrents[,]” which “are known to include child pornography[.]” United States v. Gonzales, 2020 WL 5210821, at *1 (D. Ariz. Sept. 1, 2020). “Once Torrential Downpour [] detects an IP address that has associated itself with

' This court previously described BitTorrent as follows: BitTorrent is a peer-to-peer (“P2P”) file sharing software that allows users to share files directly with other BitTorrent users. P2P software also allows a user to download multiple files at the same time from different computers, thereby increasing download speeds. To access P2P software, “a user must first obtain the P2P software, which can be downloaded from the Internet.” During the installation of P2P software, a user may be able to reconfigure certain default settings including designating which folders on his or her computer will be made available to other BitTorrent users for download. “It is the computers linked together through the Internet using P2P software that form the BitTorrent network that allows for the sharing of digital files between users.” (Doc. 140 at 2) (alteration adopted) (internal citations omitted).

a torrent of interest, it reports information about the IP address and the computer’s networking port[,]”’ and “[t]his information serves as a lead for officers to investigate using the Torrential Downpour program.” Jd. A unique feature of the software is “that □□ it is designed to target and download files from a single IP address, as opposed to multiple sources, and restrict downloads to come from only that particular address[.]” Maurek, 131 F. Supp. 3d at 1261. “Torrential Downpour’s direct connection capabilities [a]re no different from other commercially available versions of BitTorrent and it. . . ha[s] no rate of error.” Jd. (emphasis supplied). HSI officers obtained the requested search warrant on May 9, 2019 and executed it on May 17, 2019. Based on the evidence recovered, Mr. Fiore was charged with possession of child pornography in violation of 18 U.S.C. § 2252(a)(4)(B). (Doc. 7.) In May 2019, Mr. Fiore retained Maryanne E. Kampmann, Esq., as his attorney.’ In furtherance of her representation of Mr. Fiore, Attorney Kampmann hired computer experts Steven Verronneau and Dan Faria to review the discovery produced by the government. Mr. Verronneau produced a 29-page preliminary report and a 37-page final report detailing his forensic examination of Mr. Fiore’s devices. Attorney Kampmann filed four motions to suppress on Mr. Fiore’s behalf. The Motion to Suppress Evidence (No Probable Cause), (Doc. 36), challenged the magistrate judge’s finding of probable cause based on “a single incident of access[.]” (Doc. 317 at 1, { 6) (internal quotation marks omitted) (citing United States v. Raymonda, 780 F.3d 105 (2d Cir. 2015)). Therein, Attorney Kampmann argued that “there was not ‘a fair probability’ that evidence of a crime would be found in [Mr. Fiore’s] home based on the agent’s incomplete download of a file titled ‘Siberian Mouse’ nearly two months prior to execution of the search warrant.” Id. at 1-2, J 6 (alteration adopted) (internal quotation marks omitted). As a result, the facts of Mr. Fiore’s case allegedly “suggested the

? Mr. Fiore later applied for appointment under the Criminal Justice Act (“CJA”) and, on January 2, 2020, Attorney Kampmann was appointed as CJA counsel for Mr. Fiore. On November 6, 2020, Robert Sussman, Esq., joined Mr. Fiore’s defense team as CJA co-counsel. References to “defense counsel” include both Attorneys Kampmann and Sussman.

inadvertent stumbling upon, rather than the intentional downloading of, child pornography.” Jd. at 2, ] 6. Mr. Fiore’s defense counsel subsequently submitted a Supplemental Memorandum of Law in Support of Motion to Suppress Evidence (No Probable Cause), (Doc. 128), in which counsel emphasized the “single incident of access” argument and noted that the government “appear[ed] to have confused a download process with ‘storage[,]’[] as well as with the deliberate uploading (and sharing) of a file to the internet.” (Doc. 317 at 7, { 23) (internal quotation marks omitted) (quoting Doc. 128 at 5). On January 19, 2021, the court issued an Opinion and Order denying Mr. Fiore’s motion to suppress for lack of probable cause, (Doc. 140), stating: The inquiry is not whether a suspect will be arrested and convicted but whether evidence of a particular crime is likely to be found in a particular place.

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