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Black Room
__NOTOC__ A black room is part of a communication center (e.g. a post office) used by state officials to conduct clandestine interception and surveillance of communications. Typically, all letters or communications pass through the black room before being passed to the recipient. This practice had been in vogue since the establishment of postal and telegraph services, and was frequently used in France by the ministers of Louis XVIII and his followers as the (French for "black room"). In modern American network operations centers, optical splitters divert a percentage of the laser light from all incoming and outgoing fiber-optic cables to the secret room. An example is Room 641A in the SBC Communications building in San Francisco. The term ''black room'' or '' black chamber'' has also been used to refer to any place or organisation dedicated to code-breaking. See also *Bulgarian medieval cryptography * Black Chamber * Black site *ECHELON *Postal censorship Postal cens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Communications Center
In telecommunications, the term communications center has the following meanings: # An agency charged with the responsibility for handling and controlling communications traffic. The center normally includes a message center, and transmitting and receiving facilities. # A facility that (a) serves as a node for a communications network, (b) is equipped for technical control and maintenance of the circuits originating, transiting, or terminating at the node, (c) may contain message-center facilities, and (d) may serve as a gateway. ''Synonym'' comm center. See also *Network operations center A network operations center (NOC, pronounced like the word ''knock''), also known as a "network management center", is one or more locations from which network monitoring and control, or network management, is exercised over a computer, teleco ... References * *{{DODDIC Telecommunications buildings ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SBC Communications
AT&T Inc., an abbreviation for its predecessor's former name, the American Telephone and Telegraph Company, is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. It is the world's third largest telecommunications company by revenue and the third largest wireless carrier in the United States behind T-Mobile and Verizon. As of 2023, AT&T was ranked 32nd on the ''Fortune'' 500 rankings of the largest United States corporations, with revenues of $122.4 billion. The modern company to bear the AT&T name began its history as the American District Telegraph Company, formed in St. Louis in 1878. After expanding services to Arkansas, Kansas, Oklahoma and Texas through a series of mergers, it became the Southwestern Bell Telephone Company in 1920. Southwestern Bell was a subsidiary of the original American Telephone & Telegraph Company, itself founded in 1885 as a subsidiary of the original Bell Telephone Compa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Postal Systems
Postal may refer to: Places * The Italian name for Burgstall, South Tyrol in northern Italy * Postal, Missouri * Postal Square * Postal Museum (Liechtenstein), a postal museum in Vaduz, Liechtenstein People * Fred Postal, former co-owner of the Washington Senators of the American League * Paul Postal (born 1936), American linguist Arts and entertainment * ''Postal'' (franchise), a series of computer games launched in 1997 ** ''Postal'' (video game), first entry in the series ** ''Postal'' (film), a 2007 Uwe Boll-directed film based on the ''Postal'' computer game * ''Postal'' (comics), a comic book series written by Matt Hawkins and Bryan Hill Other uses * Postal code *Postal service, mail See also * Going postal (other) * Postal Act (other) * Postal Bank (other) * Postal abbreviation (other) * Postal inspector (other) Postal inspector may refer to: * The United States Postal Inspection Service (or USPIS), the law e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Privacy Of Telecommunications
__NOTOC__ The secrecy of correspondence (, ) or literally translated as secrecy of letters, is a fundamental legal principle enshrined in the constitutions of several European countries. It guarantees that the content of sealed Letter (message), letters is never revealed, and that letters in transit are not opened by government officials, or any other third party. The right of privacy to one's own letters is the main legal basis for the assumption of privacy of correspondence. The principle has been naturally extended to other forms of telecommunication, communication, including telephony and electronic communications on the Internet, as the constitutional guarantees are generally thought to also cover these forms of communication. However, national telecommunications privacy laws may allow lawful interception, i.e. wiretapping and monitoring of electronic communications in cases of Suspect, suspicion of crime. Paper letters have, in most jurisdictions, remained outside the legal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Postal Censorship
Postal censorship is the inspection or examination of mail, most often by governments. It can include opening, reading and total or selective obliteration of letters and their contents, as well as Cover (philately), covers, postcards, Parcel post, parcels and other postal packets. Postal censorship takes place primarily but not exclusively during wartime (even though the nation concerned may not be at war, e.g. The Emergency (Ireland), Ireland during 1939–1945) and periods of unrest, and occasionally at other times, such as periods of civil disorder or of a state of emergency. Both covert and Openness, overt postal censorship have occurred. Historically, postal censorship is an ancient practice; it is usually linked to espionage and Intelligence (information gathering), intelligence gathering. Both civilian mail and military mail may be subject to censorship, and often different organisations perform censorship of these types of mail. In 20th-century wars the objectives of post ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
ECHELON
Echelon may refer to: * A level formation ** A level or rank in an organization, profession, or society ** A military sub-subunit smaller than a company but larger than a platoon ** Echelon formation, a step-like arrangement of units * ECHELON, a worldwide electronic intelligence-gathering operation, within the UKUSA Agreement, mainly for industry espionage Places * Echelon, New Jersey Sciences * En echelon veins, geological feature * Row echelon form, in mathematics, a kind of matrix Arts * Echelon (band), a four-piece band hailing from Essex, England * The Echelon, fanbase of the band Thirty Seconds to Mars Thirty Seconds to Mars (commonly stylized as 30 Seconds to Mars) is an American Rock music, rock band from Los Angeles, California, formed in 1998. The band consists of brothers Jared Leto (lead vocals, guitar, bass, keyboards) and Shannon Let ..., named after a song on their debut album. * ''Echelons'' (album) Games * ''Echelon'' (1987 video game), a space f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Chamber
The Black Chamber, officially the Cable and Telegraph Section and also known as the Cipher Bureau, was the first peacetime cryptanalytic organization in the United States, operating from 1917 to 1929. It was a forerunner of the National Security Agency (NSA). History Until World War I, the only codes and cypher organizations created by the U.S. government were short-lived agencies of the United States Armed Forces, such as the U.S. Army's Military Intelligence (MI-8). The Cable and Telegraph Section or Cipher Bureau was established on April 28, 1917, three weeks after the U.S. Congress declared war on the German Empire and began American involvement in World War I. It was headquartered in Washington, D.C., operated under the executive branch without direct Congressional authorization, and was moved in the Army's organizational chart several times. On July 5, 1917, Herbert O. Yardley was assigned to head the Cipher Bureau, which consisted of Yardley and two civilian clerk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Code-breaking
Cryptanalysis (from the Greek ''kryptós'', "hidden", and ''analýein'', "to analyze") refers to the process of analyzing information systems in order to understand hidden aspects of the systems. Cryptanalysis is used to breach cryptographic security systems and gain access to the contents of encrypted messages, even if the cryptographic key is unknown. In addition to mathematical analysis of cryptographic algorithms, cryptanalysis includes the study of side-channel attacks that do not target weaknesses in the cryptographic algorithms themselves, but instead exploit weaknesses in their implementation. Even though the goal has been the same, the methods and techniques of cryptanalysis have changed drastically through the history of cryptography, adapting to increasing cryptographic complexity, ranging from the pen-and-paper methods of the past, through machines like the British Bombes and Colossus computers at Bletchley Park in World War II, to the mathematically advanced compu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Chamber
The Black Chamber, officially the Cable and Telegraph Section and also known as the Cipher Bureau, was the first peacetime cryptanalytic organization in the United States, operating from 1917 to 1929. It was a forerunner of the National Security Agency (NSA). History Until World War I, the only codes and cypher organizations created by the U.S. government were short-lived agencies of the United States Armed Forces, such as the U.S. Army's Military Intelligence (MI-8). The Cable and Telegraph Section or Cipher Bureau was established on April 28, 1917, three weeks after the U.S. Congress declared war on the German Empire and began American involvement in World War I. It was headquartered in Washington, D.C., operated under the executive branch without direct Congressional authorization, and was moved in the Army's organizational chart several times. On July 5, 1917, Herbert O. Yardley was assigned to head the Cipher Bureau, which consisted of Yardley and two civilian clerk ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Room 641A
Room 641A is a telecommunication interception facility operated by AT&T for the U.S. National Security Agency, as part of an American mass surveillance program. The facility commenced operations in 2003 and its purpose was publicly revealed by AT&T technician Mark Klein in 2006. Description 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 tudy Group 3Secure Room''. The room measures about and contains several racks of equipment, including a Narus STA 6400, a device designed to intercept and analyze Internet communications at very high speeds. It is fed by fiber optic lines from beam splitters installed in fiber optic trunks carrying Internet backbone traffic. In the analysis of J. Scott Marcus, a former CTO for GTE and a former adviser to the Federal Communications Commission, it has access to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
