Room 641A
Encyclopedia
Room 641A is an intercept facility operated by AT&T
AT&T
AT&T Inc. is an American multinational telecommunications corporation headquartered in Whitacre Tower, Dallas, Texas, United States. It is the largest provider of mobile telephony and fixed telephony in the United States, and is also a provider of broadband and subscription television services...

 for the U.S. National Security Agency
National Security Agency
The National Security Agency/Central Security Service is a cryptologic intelligence agency of the United States Department of Defense responsible for the collection and analysis of foreign communications and foreign signals intelligence, as well as protecting U.S...

, beginning in 2003. Room 641A is located in the SBC Communications building at 611 Folsom Street, San Francisco, three floors of which were occupied by AT&T before SBC purchased AT&T. The room was referred to in internal AT&T documents as the SG3 [Study Group 3] Secure Room. It is fed by fiber optic
Optical fiber
An optical fiber is a flexible, transparent fiber made of a pure glass not much wider than a human hair. It functions as a waveguide, or "light pipe", to transmit light between the two ends of the fiber. The field of applied science and engineering concerned with the design and application of...

 lines from beam splitter
Beam splitter
A beam splitter is an optical device that splits a beam of light in two. It is the crucial part of most interferometers.In its most common form, a rectangle, it is made from two triangular glass prisms which are glued together at their base using Canada balsam...

s installed in fiber optic trunks carrying Internet backbone
Internet backbone
The Internet backbone refers to the principal data routes between large, strategically interconnected networks and core routers in the Internet...

 traffic and, therefore, presumably has access to all Internet traffic that passes through the building.

The room measures about 24 by and contains several racks of equipment, including a Narus STA 6400, a device designed to intercept and analyze Internet communications at very high speeds.

The existence of the room was revealed by a former AT&T technician, Mark Klein
Mark Klein
Mark Klein is a former AT&T technician who leaked knowledge of his company's cooperation with the United States National Security Agency in installing network hardware to monitor and process American telecommunications...

, and was the subject of a 2006 class action
Class action
In law, a class action, a class suit, or a representative action is a form of lawsuit in which a large group of people collectively bring a claim to court and/or in which a class of defendants is being sued...

 lawsuit by the Electronic Frontier Foundation
Electronic Frontier Foundation
The Electronic Frontier Foundation is an international non-profit digital rights advocacy and legal organization based in the United States...

 against AT&T. Klein claims he was told that similar black room
Black room
While a black room or black chamber is often now used to refer to any place or organisation dedicated to code-breaking, its more exact meaning is a secret room in a post office, and, later and by extension, a telecommunications center used by state officials to conduct clandestine interception and...

s are operated at other facilities around the country.

Room 641A and the controversies surrounding it were subjects of an episode of Frontline, the current affairs documentary program on PBS
Public Broadcasting Service
The Public Broadcasting Service is an American non-profit public broadcasting television network with 354 member TV stations in the United States which hold collective ownership. Its headquarters is in Arlington, Virginia....

. It was originally broadcast on May 15, 2007. It was also featured on PBS's NOW on March 14, 2008.

Lawsuit

The Electronic Frontier Foundation
Electronic Frontier Foundation
The Electronic Frontier Foundation is an international non-profit digital rights advocacy and legal organization based in the United States...

 (EFF) filed a class-action
Class action
In law, a class action, a class suit, or a representative action is a form of lawsuit in which a large group of people collectively bring a claim to court and/or in which a class of defendants is being sued...

 lawsuit
Lawsuit
A lawsuit or "suit in law" is a civil action brought in a court of law in which a plaintiff, a party who claims to have incurred loss as a result of a defendant's actions, demands a legal or equitable remedy. The defendant is required to respond to the plaintiff's complaint...

 against AT&T
AT&T
AT&T Inc. is an American multinational telecommunications corporation headquartered in Whitacre Tower, Dallas, Texas, United States. It is the largest provider of mobile telephony and fixed telephony in the United States, and is also a provider of broadband and subscription television services...

 on January 31, 2006, accusing the telecommunication company of violating the law and the privacy of its customers by collaborating with the National Security Agency
National Security Agency
The National Security Agency/Central Security Service is a cryptologic intelligence agency of the United States Department of Defense responsible for the collection and analysis of foreign communications and foreign signals intelligence, as well as protecting U.S...

 (NSA) in a massive, illegal program to wiretap and data-mine
Data mining
Data mining , a relatively young and interdisciplinary field of computer science is the process of discovering new patterns from large data sets involving methods at the intersection of artificial intelligence, machine learning, statistics and database systems...

 Americans' communications. On July 20, 2006, a federal judge denied the government's and AT&T's motions to dismiss the case, chiefly on the ground of the States Secrets Privilege
State Secrets Privilege
The state secrets privilege is an evidentiary rule created by United States legal precedent. Application of the privilege results in exclusion of evidence from a legal case based solely on affidavits submitted by the government stating that court proceedings might disclose sensitive information...

, allowing the lawsuit to go forward. On August 15, 2007, the case was heard by the Ninth Circuit Court of Appeals
United States Court of Appeals for the Ninth Circuit
The United States Court of Appeals for the Ninth Circuit is a U.S. federal court with appellate jurisdiction over the district courts in the following districts:* District of Alaska* District of Arizona...

.

An additional case by the EFF was created on September 18, 2008, titled Jewel v. NSA.

See also

  • President's Surveillance Program
    President's Surveillance Program
    The President's Surveillance Program is a collection of secret intelligence activities authorized by then President of the United States George W. Bush after the September 11 attacks in 2001 as part of the War on Terrorism...

  • Cabinet noir
    Cabinet noir
    Cabinet noir was the name given in France to the office where the letters of suspected persons were opened and read by public officials before being forwarded to their destination...

  • NSA warrantless surveillance controversy
    NSA warrantless surveillance controversy
    The NSA warrantless surveillance controversy concerns surveillance of persons within the United States during the collection of foreign intelligence by the U.S. National Security Agency as part of the war on terror...

  • Signals intelligence
  • ECHELON
    ECHELON
    ECHELON is a name used in global media and in popular culture to describe a signals intelligence collection and analysis network operated on behalf of the five signatory states to the UK–USA Security Agreement...


External links

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