Snowden's affinity for Tor, an acronym for "the onion router," is not shared by the government ruling his adopted country. Russia's Interior Ministry is offering a contract worth 3.9 million rubles ($110,000) "to study the possibility of obtaining technical information on users and users' equipment of Tor anonymous network," according to an announcement posted last week on the government's website for state purchases.
The free software, engineered by the nonprofit Tor Project, sends each user's traffic across various nodes around the globe, encrypting it at every layer and making it extremely difficult to track. Tor is popular among hackers, criminals and political dissidents worldwide, and Russians have been especially receptive to Snowden's calls. The number of Tor users in the country tripled over the last 12 months to more than 150,000, according to data from the Tor Project.
By the way, you can download TOR here: https://www.torproject.org/