Identifying users who access Tor hidden services -- websites that are only accessible inside the Tor anonymity network -- is easier than de-anonymizing users who use Tor to access regular Internet websites.
Little is known about how U.S. and European law enforcement shut down more than 400 websites, including Silk Road 2.0, which used technology that hides their true IP addresses.
The Tor Project has flagged a server in Russia after a security researcher found it slipped in malware when users were downloading files.
The Russian Ministry of Interior is willing to pay 3.9 million roubles, or around US$111,000, for a method to identify users on the Tor network.
The TOR Project thinks it has figured out how the author of a canceled Black Hat talk cracked its software to mask the source of Internet traffic, and it is working on a patch.