Elon Musk’s X has filed a Supreme Court brief supporting a user suing the U.S. government over access to private crypto data without a warrant, according to the Financial Times. X argued against broad, suspicionless data requests, saying platforms shouldn’t be forced to help the government undermine user privacy. The case involves a Coinbase user who claims the IRS accessed user data without probable cause. A ruling in the plaintiff's favor could block law enforcement from obtaining private data without specific suspicion. The filing comes as X expands into financial services with plans for a peer-to-peer payment system called X Money amid rising government scrutiny of social media activity.