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How Mark Klein told the EFF about Room 641A [book excerpt]

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Why This Matters

Mark Klein's whistleblowing revealed the NSA's secret wiretapping operations within AT&T's infrastructure, exposing significant privacy violations and prompting increased awareness and advocacy for digital rights. This case underscores the importance of transparency and oversight in government surveillance programs, impacting both industry practices and consumer privacy protections.

Key Takeaways

The Whistleblower Who Uncovered the NSA’s ‘Big Brother Machine’

An unexpected visitor gave my team the evidence we needed to prove that the government was secretly wiretapping Americans.

Room 641A, which housed the “Big Brother machine,” inside AT&T’s Folsom Street building in San Francisco, California. Source: Mark Klein / The Electronic Frontier Foundation.

By: Cindy Cohn

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