Prism / NSA - Facebook, Google, Microsoft, Apple, Yahoo - Snowden

Den brittiska underrättelsetjänsten övervakade deltagarna på två G20-möten i London 2009.
Det visar dokument som släppts av superläckan Edward Snowden.
MI5 ska bland annat ha hackat lösenord till deltagarnas telefoner och byggt falska internetcaféer för att komma över delegaternas mailkorrespondens. Avslöjandet, som publiceras i brittiska The Guardian, kommer samtidigt som England förbereder sig inför morgondagens G8-möte på Nordirland. Genom Edward Snowden, IT-analytikern som avslöjat USA:s hemliga övervakning av tele- och datatrafik, har tidningen fått tillgång till dokument från den brittiska signalspaningsmyndigheten GCHG.

Dokumenten visar hur den brittiska underrättelsetjänsten MI5 under två G20-möten i London bland annat övervakade delegaternas telefoner för att komma åt telefonsamtal och meddelanden, skriver The Guardian.
MI5 ska också ha byggt falska internetcaféer i anslutning till mötet för att komma över lösenord och deltagarnas mailkorrespondens. 45 analytiker arbetade dygnet runt Delegater från Sydafrika, den turkiska finansministern Mehmet Simsek och flera andra turkiska deltagare ska ha övervakats, skriver tidningen.

I dokumenten avslöjas också att 45 analytiker arbetade dygnet runt för att övervaka vem som ringde vem under mötet. Enligt The Guardian var övervakningsaktionen sanktionerad på hög nivå i dåvarande premiärministern Gordon Browns regering – och informationen slussades vidare direkt till brittiska ministrar. Målet för övervakningen var att skaffa England fördelar i förhandlingarna.
Alla länder som deltar i morgondagens G8-möte var också med på de två G20-mötena 2009.

Use of intelligence[edit]

Most deciphered messages, often about relative trivia, were not alone sufficient as intelligence reports for military strategists or field commanders. The organisation, interpretation and distribution of intelligence derived from messages from Enigma transmissions and other sources into intelligence was a subtle business. This was not recognised by the Americans before the attack on Pearl Harbor, but was learnt very quickly afterwards.[27]

At Bletchley Park, extensive indexes were kept of the information in the messages decrypted.[28] For each message the traffic analysis recorded the radio frequency, the date and time of intercept, and the preamble—which contained the network-identifying discriminant, the time of origin of the message, the callsign of the originating and receiving stations, and the indicator setting. This allowed cross referencing of a new message with a previous one.[29] The indexes included message preambles, every person, every ship, every unit, every weapon, every technical term and of repeated phrases such as forms of address and other German military jargon that might be usable as cribs.[30]

The first decryption of a wartime Enigma message was achieved by the Poles at PC Bruno on 17 January 1940, albeit one that had been transmitted three months earlier. Little had been achieved by the start of the Allied campaign in Norway in April. At the start of the Battle of France on 10 May 1940, the Germans made a very significant change in the indicator procedures for Enigma messages. However, the Bletchley Park cryptanalysts had anticipated this, and were able—jointly with PC Bruno—to resume breaking messages from 22 May, although often with some delay. The intelligence that these messages yielded was of little operational use in the fast-moving situation of the German advance.

Decryption of Enigma traffic built up gradually during 1940, with the first two prototype bombes being delivered in March and August. The traffic was almost entirely limited to Luftwaffe messages. By the peak of the Battle of the Mediterranean in 1941, however, Bletchley Park was deciphering daily 2,000 Italian Hagelin messages. By the second half of 1941 30,000 Enigma messages a month were being deciphered, rising to 90,000 a month of Enigma and Fish decrypts combined later in the war.[15]