Russia and China 'broke into Snowden files to identify British and US spies'

Sunday Times says Downing Street believes both nations have hacked into American whistleblower’s files, and that agents have been put in peril

James Tapper
Saturday 13 June 2015  |  The Guardian  |  http://www.theguardian.com/us-news/2015/jun/14/russia-and-china-broke-into-snowden-files-to-identify-british-and-us-spies

Downing Street believes that Russian and Chinese intelligence agencies have used documents from whistleblower Edward Snowden to identify British and US secret agents, according to a report in the Sunday Times.
The newspaper says MI6, Britain’s Secret Intelligence Service, has withdrawn agents from overseas operations because Russian security services had broken into encrypted files held by American computer analyst Snowden.
Snowden provided the Guardian with top secret documents from the US National Security Agency (NSA), which revealed that western intelligence agencies had been undertaking mass surveillance of phone and internet use.