Mark Klein, a former AT&T technician turned an informant who exhibited mass surveillance from the US government, died at the age of 79.
Klein was made public in 2006 with documents revealing that the NSA used a secret room in AT&T Nabo in San Francisco to push the back of the Internet.
Behind the door of the now infamous Room 641aOptical split wires created an identical copy of raw internet traffic and pushed it back to the NSA.
Klein’s disclosure was confirmation that the US government accessed the online data on millions of Americans using powers given by the congress following the terrorist attacks of September 11, 2001.
In 2013, then NSA contractor Edward Snowden leaked thousands of classified documents to journalists detailing wide NSA surveillance around the world.
Klein’s death was Confirmed by the Electronic Front FoundationThe San Francisco-based Digital Right Group to which Klein turned, and who continued to process the federal government following Klein’s information. The case was later dismissed.
