United States v. Michael Brown

857 F.3d 334, 2017 FED App. 0105P, 2017 WL 2055630, 2017 U.S. App. LEXIS 8511
Court of Appeals for the Sixth Circuit·Decided May 15, 2017·No. 16-6291·Published·Cited by 8 cases

Opinion

OPINION

SUTTON, Circuit Judge.

When criminal-law cases imitate art, they do not always choose its highest form. In Austin Powers: International Man of Mystery, Dr. Evil develops a plan to steal a nuclear warhead and to hold the world hostage for $1 million. This was not, Dr. Evil’s deputy pointed out, all that much money for a 1990s global criminal enterprise. But it was enough for an anonymous extortionist in today’s case, who apparently was familiar with the movie and who chose some features of it as signatures of his 2012 crime. Assuming the nom de guerre “Dr. Evil,” the individual demanded $1 million in Bitcoin in exchange for an encryption key to Mitt Romney’s unreleased tax returns. The extortionist claimed to have stolen Romney’s returns from PricewaterhouseCoopers, and he posted a taunting, digitally altered image of Mike Myers’s Dr. Evil, wearing a Secret Service badge, in the lobby of the accounting firm’s offices in Franklin, Tennessee.

A trail of digital breadcrumbs led law enforcement to Tennessean Michael Brown. It turned out that Brown never stole Romney’s returns. And his attempt to extort PricewaterhouseCoopers, the Democratic and Republican parties, and *337 the public earned Brown twelve convictions for wire fraud and extortion, a four year prison sentence, and an order to pay over $200,000 in restitution. Brown appeals his convictions on the grounds that the Secret Service’s search warrant lacked probable cause and that he was prejudiced by the trial judge’s decision to allow questions from the jury. Brown also appeals the obstruction of justice enhancement in the district court’s calculation of his sentence. We affirm Brown’s convictions but vacate his sentence.

I.

On August 28, 2012, a padded envelope arrived at the Franklin, Tennessee office of PricewaterhouseCoopers, an accounting and professional services firm. The envelope contained a flash drive and a letter, which explained that the anonymous sender had gained access to the firm’s network and stolen the unreleased tax documents of Republican presidential nominee Mitt Romney and his wife Ann. To “Stop Release” of those tax records, all Pricewater-houseCoopers had to do was deposit one million dollars in Bitcoin—a virtual, sovereign-free currency—into a specified account. App. R. 34 at 4. The encrypted tax files on the thumb drive would go to every major media outlet, the sender said, and the encryption key would become public if no one paid him before September 28. At “the same time,” the letter stated, “other interested parties will be allowed to compete” for the returns and guarantee immediate release of them by depositing a million dollars in a separate, “Promote Full Release” Bitcoin account. Id.

Within three days, similar envelopes with similar letters and flash drives arrived at the offices of the Williamson County Republican and Democratic parties. And within a week after that, a series of posts appeared on Pastebin.com, a website that permits anonymous publication, describing the stolen documents and the information in the letters. The third of these Pastebin posts—signed “Dr. Evil” and accompanied by an image of Dr. Evil superimposed on the lobby of Pricewater-houseCoopers’ Franklin office—directed users to a downloadable, encrypted file named “Romneyl040-Collection.7z,” which had been uploaded to another site by timyenmor28@live.com (that’s “Romney” and “Mit” spelled backwards). Id. at 34, 39, 41.

Meanwhile, the Secret Service opened an investigation, as did Pricewaterhouse-Coopers. The PricewaterhouseCoopers security team concluded that no one had breached its network or compromised the Romney tax records. That left the Secret Service to catch the schemer. Records obtained from Pastebin showed that the three posts had been made using the TOR network, which routes online communications through anonymizing proxy computers to hide the user’s IP address. And the Secret Service took possession of the envelopes, letters, and flash drives. All three flash drives contained a file named “Rom-neyl040-Collection.7z.” R. 177 at 33, 53-54. The unallocated space on the drives also held text strings and two photos of cats. The PricewaterhouseCoopers flash drive held the text string, “5276 dolphin ka-thryn.” Id. at 35. The Democratic Party drive had the string “4154 dolphin KnightMB.” Id. at 55, 57; App. R. 34 at 22.

A series of Google searches using “KnightMB” revealed an email address, knightmb@knightmb.dyns.org, and that a 33 year-old Tennessean named Michael Brown made online posts connected to that address. The Tennessee Department of Motor Vehicles confirmed that Michael Mancil Brown lived in Franklin and had a spouse named Kathryn. AT&T’s subscriber records for Brown’s home listed his *338 email address as knightmb@knightmb. dyns.org. Brown’s Comcast subscriber records led to knightmb@timekoin.org. YouTube videos posted by “KnightMB” had Brown in them. And another online post by “KnightMB” had bragged about encrypting a file using 7-Zip, the program denoted by the “.7z” file extension in “Romneyl040-Collection.7z.” The Secret Service obtained a trap-and-trace order, see 18 U.S.C. § 3123(a)(1), to monitor internet traffic in and out of Brown’s house. On September 11, 2012, an IP address associated with Brown connected to TOR—the anonymizing proxy network that “Dr. Evil” and “timyenmor” had used—and accessed the same German IP address that one of the Pastebin posts had come from.

The Secret Service obtained a search warrant for Brown’s home, and forensic examination of Brown’s computer identified more incriminating evidence. The key conclusions were (1) that the extortionist’s flash drives had connected to Brown’s computer less than a week before they arrived at PricewaterhouseCoopers and the Democratic and Republican parties, (2) that Brown’s computer had stored the Romneyl040-Collection.7z file, (3) that Brown’s internet browser had bookmarked the Bitcoin addresses in the extortion letters two days before the first extortion letter arrived at PricewaterhouseCoopers and had accessed those addresses on the morning of the search, (4) that his computer had used TOR to connect to the IP address linked to one of the Pastebin posts ten minutes before that post appeared, (5) that the computer used the KnightMB email address around the time it had Goo-gled directions to the Pricewaterhouse-Coopers office in Franklin, one week before the letter arrived there, and (6) that the computer had stored the images of Dr. Evil and the PricewaterhouseCoopers lobby, the “timyenmor” email address, and the text of the “Dr. Evil” post—all before any of those items appeared on Pastebin— as well as numerous filenames related to Romney’s taxes. Brown’s neighbors said that he went to their house to print some files (the extortion letters), where he had also gotten padded envelopes like the ones the letters and thumb drives arrived in. Brown’s spouse and daughter resolved one last mystery: The anonymous cats pictured on the Democratic Party thumb drive belonged, they said, to a neighbor, Janine Bolin. Ms. Bolin corroborated that those were her cats, Tripper and Valentine, and that Brown had once helped her with some computer problems.

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United States v. Michael Brown, 857 F.3d 334, 2017 FED App. 0105P, 2017 WL 2055630, 2017 U.S. App. LEXIS 8511 (6th Cir. 2017).

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