organization

AT&T

Telecommunications company whose facility reportedly housed the secret room for copying traffic.

Appears in 3 stories · first seen November 3, 2026

Often alongside:National Security Agency Electronic Frontier Foundation Mark Klein Room 641A 611 Folsom Street San Francisco Privacy's Defenders Podcast

Room 641A housed an NSA-linked fiber interception hub that duplicated AT&T internet traffic for high-speed content and metadata analysis.
6 sources
AT&T built a San Francisco room to copy phone and internet traffic for NSA analysis.
7 sources
Video
A retired AT&T technician revealed a secret room copying Bay Area internet traffic for NSA access.
5 sources