Fact check
Is it true: Room 641A AT&T fiber-splitter NSA tap (2003-06)?
Yes — this is confirmed.
Mark Klein's sworn technical declarations in EFF v. AT&T (Hepting) documented a fiber-optic splitter on AT&T's 7th floor feeding all backbone traffic into a Narus STA 6400 NSA deep-packet inspection system. The NYT confirmed the broader warrantless wiretap program in December 2005. The FISA Amendments Act of 2008 granted retroactive telco immunity — effectively acknowledging the program's existence. Confirmed by physical documentation, congressional legislation, and subsequent NSA disclosures.
The claim
AT&T technician Mark Klein revealed in 2006 that a secret room on the 7th floor of AT&T's 611 Folsom Street facility in San Francisco had been equipped with a Narus STA 6400 deep-packet inspection sys
Key evidence
Mark Klein's sworn technical declarations in EFF v. AT&T
Courts dismissed Hepting case after FAA retroactive immunity
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