TOR has warned its users to stay away from Windows after it was revealed that US spooks were spreading malware on the anonymising network using a Firefox zero-day vulnerability
According to a security advisory posted by the TOR Project, the work around is switching away from Windows.
Those using Linux and OS X were unaffected. While there is nothing to stop the spooks writing a version of the code which targets Linux and OS X, it is less likely to happen.
The exploit is targeted specifically to unmask Tor Browser Bundle users without actually installing any backdoors on their host.
Mozilla has patched the hole in later versions of Firefox, but some people may still be using the older versions of the TOR Browser Bundle.