United States v. Baker

Court of Appeals for the Fifth Circuit·Decided June 16, 2023·No. 22-20216·Unpublished

Opinion

Case: 22-20216 Document: 00516789671 Page: 1 Date Filed: 06/16/2023

United States Court of Appeals for the Fifth Circuit United States Court of Appeals Fifth Circuit

____________ FILED June 16, 2023 No. 22-20216 Lyle W. Cayce ____________ Clerk

United States of America,

Plaintiff—Appellee,

versus

Gregory Eugene Baker,

Defendant—Appellant. ______________________________

Appeal from the United States District Court for the Southern District of Texas USDC No. 4:20-CR-612-1 ______________________________

Before Jones, Clement, and Haynes, Circuit Judges. Per Curiam: * Gregory Baker brings this appeal after a jury found him guilty of receiving child pornography in violation of 18 U.S.C. § 2252A(b)(1) and possessing child pornography in violation of 18 U.S.C. § 2252A(b)(2). The evidence against him supports these charges, and his legal challenges are foreclosed. Therefore, we AFFIRM.

_____________________ * Pursuant to 5th Circuit Rule 47.5, the court has determined that this opinion should not be published and is not precedent except under the limited circumstances set forth in 5th Circuit Rule 47.5.4. Case: 22-20216 Document: 00516789671 Page: 2 Date Filed: 06/16/2023

No. 22-20216

I. Background Officer Bruce Moats was an investigator for the Fort Bend County District Attorney. He specializes in forensic computer analysis. During the investigation that led to this case, he was assigned to the Houston Metro Internet Crimes Against Children Task Force and worked undercover to detect child pornography on Freenet, a dark web platform where people can share files. Freenet is designed to provide anonymity and circumvent censorship. To that end, it operates as a “closed-loop” network, meaning that users only communicate with other computers that are also on the network. To find and download files on Freenet, users need a “check key”—analogous to a URL. Users enter a check key into Freenet, and the Freenet program then attempts to retrieve the file associated with that check key. Freenet conceals the files it stores by disassembling and dispersing them. When Freenet stores a file, it first breaks the file into hundreds or thousands of different “blocks,” encrypts those blocks, and then saves them on devices that use Freenet, such that no single device contains all the blocks necessary to reassemble the file. A user whose device stores some of the blocks is unaware of their presence, and he or she is not able to determine the nature of the file based on the blocks alone. Accessing these files requires finding and reassembling them. The process begins when a user enters the check key for a particular file into Freenet. Then, their computer sends a request for blocks associated with that file to the Freenet-using devices to which it is connected. If those devices do not have those blocks, they relay the request to other devices. Besides the initial user who entered the check key, none of the users whose devices are involved in this sequence are aware that their computers are relaying these requests; their computers conduct the search passively. The

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request is relayed 17 or 18 times before the search terminates. In some cases, Freenet will not be able to assemble the file after the search. This process leaves clues as to which device began the search for a particular file. To ensure that the search terminates after 17 or 18 relays, each request is assigned a different “hops to live (HTL) value.” The request that starts the search typically has an HTL value of 18 or 17, and subsequent requests will have lower numbers. Because it is far more likely that a request with a high HTL value began the search, investigators like Officer Moats will disregard suspicious requests with HTL values lower than 17. In July 2018, Officer Moats noticed that an IP address geolocated in Sugar Land, Texas, had recently sent 13 requests on Freenet using check keys known to be associated with child pornography. All 13 requests had HTL values of 18 or 17. However, he was not able to determine whether the requests had successfully assembled the files, or whether the requestor had downloaded them. To verify the content of the files, Officer Moats entered the same 13 check keys into Freenet, which successfully assembled 11 out of the 13. He confirmed that those 11 files contained child pornography. Officer Moats subpoenaed Comcast, which owned and serviced the IP address, to learn the identity of the subscriber associated with the address. The subpoena response revealed that Gregory Baker—a software engineer living in Sugar Land, Texas—was the subscriber. Law enforcement obtained a warrant and searched Baker’s home in April 2019. They seized 32 devices containing 12,762 images and 380 videos of child pornography during the search. Freenet was installed on several of these devices. Most of the child pornography had been deleted and moved to unallocated space on the devices’ hard drives. Two of the images and one of the videos were identical to files that Officer Moats had found when he entered the suspicious check keys into Freenet. Additionally, six other files—no longer accessible, but

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with titles associated with child pornography—indicated they had been downloaded between January and May 2018. On November 18, 2020, a grand jury indicted Baker with one count of receiving child pornography in violation of 18 U.S.C. § 2252A(b)(1) (on or about July 27, 2018, the day the suspicious activity on Freenet came from Baker’s IP address) and one count of possessing child pornography in violation of 18 U.S.C. § 2252A(b)(2) (on or about April 4, 2019, the day of the search). The statute of limitations for both offenses is five years. 18 U.S.C. § 3282. Baker pleaded not guilty. At trial, after the government closed, Baker moved for an acquittal under Rule 29 of the Federal Rules of Criminal Procedure. His attorney argued that the government had not shown that Baker received child porn on or about July 27, 2018. According to him, “there were no dates associated with those files that were found on any of these devices. So there wasn’t any evidence that they came as a result of what was going on, any downloads on July 2018.” The court asked, “Do I have anything, any document, that show [sic] the receipt . . . anytime on or about July of 2018?” Baker’s lawyer replied, “No, you don’t.” Later, Baker’s lawyer again stated that “there is [sic] no dates associated with whatever files these are.” The court denied the motion, acknowledging that the prosecution had no direct evidence of receipt in July 2018, but ruling that the circumstantial evidence was sufficient to overcome the motion. Baker renewed the motion after the jury retired, and the court again denied it. The jury found Baker guilty on both counts. The judge sentenced him to 90 months’ imprisonment for each offense, to run concurrently for a total of 90 months’ imprisonment. Baker appealed.

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II.

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