Jack Sweeney said he thinks Elon Musk's threat to sue him for sharing the status of his private jet is most likely a bluff.This week, Twitter, which Musk bought in October, suspended the @ElonJet account, Sweeney's personal account, the accounts for Sweeney's other jet trackers and later the accounts of several journalists who Musk claimed had shared or "doxxed" his location."Any account doxxing real-time location info of anyone will be suspended, as it is a physical safety violation," Musk wrote on Twitter Wednesday, an apparent justification for taking down Sweeney's accounts.Some observers said the policy change marked a reversal from a position Musk took in November when he tweeted, "My commitment to free speech extends even to not banning the account following my plane, even though that is a direct personal safety risk."Jeff Kosseff, a cybersecurity expert and United States Naval Academy professor, noted that "doxxing" lacks a legal framework and that there is not a standalone criminal charge called “doxxing.”"It very well could violate cyberbullying or harassment laws, depending on the specific case and law," Kosseff said."