CNN CNN Newsroom February 27, 2014 15:48:00
Took one snapshot every five minutes. and stored it in a huge database. and the important thing here is that this was clearly bulk collection. this wasn't specifically targeted e-mail users, by any means. this was all swept up from millions of yahoo! users and stored. it looked like it was part of an experimental program where they were trying to test out facial recognition technology and we don't know yet exactly how this information was used but according to these documents, they were all put into a massive database and it was conducted by the british spying service, the gchq. we reached out...
Source: archive.org