Mozilla fights FBI over access to Tor vulnerability details

Mozilla is fighting to force the FBI to disclose details of a vulnerability in the Tor web browser. The company fears that the same vulnerability could affect Firefox, and wants to have a chance to patch it before details are made public.

The vulnerability was exploited by FBI agents to home in on a teacher who was accessing child pornography. Using a “network investigative technique”, the FBI was able to identify the man from Vancouver, but Mozilla is concerned that it could also be used by bad actors.