Taylor Swift threatens student with lawsuit over flight data tracker. Taylor Swift's lawyers are now taking action.

They fear stalking. Jack Sweeney received a letter from a law firm. It urges him to stop broadcasting the flight details of Swift's private jet. For Swift, according to the letter from the Venable law firm in the US capital, it was "a question of life or death" Swift herself has commented on the threat of stalkers several times. A spokeswoman for Swift confirmed a connection between the letter and the incidents in New York.