NSA use tool to record “100%” of a country’s phone calls

The Washington Post is today reporting that the NSA used blanket tactics to monitor phone calls from an entire country.

Millions of voice “cuts” are extracted for long time storage as part of a system called MYSTIC that’s been running since 2009, according to the latest tranche of leaked documents from NSA whistleblower Edward Snowden.

 Analysts have been able to use a search tool called RETRO (retrospective retrieval) to query data on the vast system and replay the content of calls.

The Washington Post is acting on a request from US officials to withhold anything that might identify the country where the system is being employed – or the other six countries where its use is planned.

MYSTIC is rare, if not unique, in focusing on the content of voice communications. Most of the agency’s previously disclosed operations have focused on either call metadata or the data mining of electronic communications through programmes such as PRISM.

Handling and transmitting bulky voice files acted as a major snag in putting together MYSTIC, at least in its early days. Around a year after MYSTIC went live, a programme officer wrote that the project “has long since reached the point where it was collecting and sending home far more than the bandwidth could handle,” theWashington Post reports.

Similar capacity ceilings have cropped up across a range of NSA collection programs, a factor that explains the spy agency’s move to cloud-based collection systems and the construction of a massive “mission data repository” at a new facility in Utah, the Washington Post adds.

An indiscriminate bulk content collection programme, even one that operates in a limited number of foreign countries, sits uncomfortably with a January reassurance by President Obama that the “United States is not spying on ordinary people who don’t threaten our national security”.

Christopher Soghoian, principal technologist for the American Civil Liberties Union, said that history suggests the MYSTIC program is only to “expand to more countries, retain data longer and expand the secondary uses” over the next couple of years or so.

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