We’re Asking the Ninth Circuit to Hold Reverse Location Warrants Categorically Unconstitutional

Yesterday, along with the ACLU, EFF filed an amicus brief in the Ninth Circuit court of appeals in United States v. Spurlock, a case involving a “tower dump” warrant. These overbroad warrants require cellular providers to turn over location data about every phone in a given area at a given time. This is the first […]

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We’re Asking the Wisconsin Supreme Court to End Warrantless ALPR Searches

Today, EFF joined the ACLU of Wisconsin in filing a petition to the Wisconsin Supreme Court, asking it to rule that the state’s constitution requires a warrant for retrospective searches of ALPR databases used by law enforcement in four cities: Milwaukee, Racine, Kenosha, and Green Bay. We represent a religious organization, the Wisconsin Council of […]

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Appeals Court Agrees with EFF that Building a Web Browser Doesn’t Violate the CFAA

The Ninth Circuit Court of Appeals has endorsed a commonsense technical interpretation of the Computer Fraud and Abuse Act (CFAA), a law not usually given to such interpretation. Amazon had sued Perplexity AI to try to shut down its Comet browser, claiming the browser’s optional agentic AI “Assistant” that can browse websites like Amazon for […]

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