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1 / 10United States v. Warshak
The United States v. Warshak is a notable case in that it was the first to rule that there is a reasonable expectation of privacy when it comes to emails stored on third-party servers—and that the content within the emails on the third-party server is protected by the Fourth Amendment. It all started with a criminal investigation into defendant Steve Warshak’s shady business practices, in which he and his mother, who helped run the business, were double- and triple-charging customer accounts and providing false information to banks to obtain loans and credit products.
As part of the criminal investigation, the government seized approximately 27,000 private emails from Warshak's ISP without a warrant—a move the government justified by relying on the Stored Communications Act. The information gleaned from the seized emails eventually helped to convict the defendants on the majority of the 112 counts, but since no warrant had been used to obtain Warshak’s emails, the case was appealed by the defendants.
Surprisingly, the court of appeals ruled that the government had violated Warshak's Fourth Amendment rights by compelling his ISP to turn over the emails without a warrant, which set the precedent that there is both a reasonable expectation of privacy when it comes to emails stored on third-party servers and that the content within the emails is also protected.

















