United States v. Clarke

United States Court of Appeals for the Second Circuit · 2020 · Evidence

Evidencechild pornographytransportationpeer-to-peerBitTorrentuTorrentknowledgeintent

Facts

Clarke used uTorrent on the BitTorrent peer-to-peer network to download child pornography and kept the files in a folder accessible to other network users. Homeland Security agents used law-enforcement software called Torrential Downpour to identify Clarke's IP address and downloaded two video files from his computer, then obtained a warrant and found thousands of child-pornography images and videos on his computer equipment. At trial, an agent testified that Clarke admitted he knew that by using the peer-to-peer program he was essentially sharing files and that his computer was open to others. Clarke sought disclosure of Torrential Downpour and its source code, arguing he needed it to test whether the software accessed nonpublic material, but the district court denied that request.

Issue

Whether the evidence was sufficient to prove that Clarke knowingly transported child pornography under 18 U.S.C. § 2252(a)(1) when agents downloaded files from his shared BitTorrent folder; whether the jury should have been instructed that the government had to prove he actively intended to transport the files; and whether denial of discovery of the Torrential Downpour software required reversal.

Rule

Under 18 U.S.C. § 2252(a)(1), a defendant transports child pornography when he knowingly and intentionally uses a peer-to-peer file-sharing network to download and store illicit files in a shared folder, understanding that doing so makes the files available for download by others, and another user in fact downloads them. A defendant is not entitled to a requested jury instruction unless it accurately states the law in every respect, and Rule 16 relief for nondisclosure requires a prima facie showing of materiality plus prejudice from the denial.

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In Buffalo, federal agents used proprietary software to identify Maya Trent’s laptop as a source of illicit image files on a peer-to-peer network. Before trial, Maya sought the software’s source code, arguing only that her consultant 'could not rule out' the possibility that the tool somehow reached private folders; the government had already produced detailed download logs, forensic reports, copies of the downloaded files, and an in-person demonstration of the tool.

If the district court denies Maya’s request and she is later convicted, which is the strongest argument for affirmance on appeal?

Explanation. Rule 16 requires a prima facie showing of materiality, and reversal for nondisclosure requires substantial prejudice. Where the government has provided substantial substitute information and the defense offers only speculation that the software might have accessed nonpublic material, the defendant has not shown that earlier disclosure would significantly have altered the proof in her favor. (Derived from United States v. Clarke (n.d.).)