Leaked documents show spy agencies pried into online video games . The NSA has been monitoring the Internet for years and is believed to have developed a program called PRISM that allows it access to data from major tech companies such as Google, Facebook, Microsoft, Yahoo, AOL, Documents were leaked by former contractor Edward Snowden . Tech companies have called for tighter surveillance restraints .
Leaked documents show spy agencies pried into online video games . `` World of Warcraft '' and `` Second Life '' were among those targeted . Documents were leaked by former contractor Edward Snowden . Tech companies have called for tighter surveillance restraints .