https://firstlook.org/theintercept/2015/08/26/way-gchq-obliterated-guardians... In July 2013, GCHQ, Britain’s equivalent of the U.S. National Security Agency, forced journalists at the London headquarters of The Guardian to completely obliterate the memory of the computers on which they kept copies of top-secret documents provided to them by former NSA contractor and whistleblower Edward Snowden. However, in its attempt to destroy information, GCHQ also revealed intriguing details about what it did and why. Two technologists, Mustafa Al-Bassam and Richard Tynan, visited Guardian headquarters last year to examine the remnants of the devices. ... “From a privacy perspective, we need to empower users with knowledge about what their devices do,”