Room 641A
Summary
Room 641A is a telecommunication interception facility operated by AT&T for the NSA, located in San Francisco, and discussed as part of a broader mass surveillance narrative in the United States. The article covers the facility's description, the hardware involved, public disclosures, and related lawsuits (notably Hepting v. AT&T and Jewel v. NSA), along with its role in ongoing debates about privacy and government surveillance programs. It situates Room 641A within a web of historical and legal context surrounding signals intelligence and civil liberties.