The Russian Ministry of Interior is willing to pay 3.9 million roubles which is around $111,000, for a method to identify users on the Tor network.
The Tor software anonymizes Internet traffic by encrypting it and passing it through several random relays in order to prevent potential network eavesdroppers from identifying the traffic's source and destination. The software was originally developed as a project of the U.S. Naval Research Laboratory, but is now being maintained by a nonprofit organization called The Tor Project.