Hacking collective Anonymous on Wednesday released over 100 gigabytes of documents that it claimed showed evidence that the Kremlin is illegally monitoring citizens across Russia. The data dump contained the information of thousands of Russian citizens who were clients of Russian corporations targeted by the surveillance program, which the group claimed to be operated by Russia's Federal Security Service (FSB). First established in 1995, SORM operates as a "back door" that gives the Russian government access to the call, messages and data of customers of Mobile TeleSystems (MTS), the largest phone provider in the company