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MI5 (Military Intelligence, Section 5), [2] officially the Security Service, is the United Kingdom's domestic counter-intelligence and security agency and is part of its intelligence machinery alongside the Secret Intelligence Service (MI6), Government Communications Headquarters (GCHQ), and Defence Intelligence (DI).
Fifth Column was the name MI5, the British Security Service, gave to a World War II operation run from 1942 until at least 1947.It was initially intended to identify people who would be willing to assist Germany in the event of an invasion of the United Kingdom, but as it developed, it also acted to divert its targets away from harmful activities.
Another kind of resource could include foreign offices owned or operated by nationals of the country in question. A step farther is a proprietary, or business, not just individuals, under non-official cover. Both kinds of business can provide information from recruitment, unwitting agents, or support functions.
The head of MI5 will make his first joint public appearance with counterparts from the Five Eyes intelligence services amid warnings about the threats to UK businesses from foreign states.
On Tuesday, Ms Lee lost her legal challenge against the security service after three judges at the Investigatory Powers Tribunal said MI5 had issued the warning for “legitimate reasons”.
NISCC's role was to provide advice to companies operating critical national infrastructure, [34] and NSAC was a unit within MI5 that provided security advice to other parts of the UK government. The Centre for the Protection of National Infrastructure (CPNI) was formed as a child agency of MI5 in 2007, merging the NISCC and NSAC. [35]
By definition, an "agent" acts on behalf of another, whether another individual, an organization, or a foreign government. Agents can be considered either witting or unwitting, and in some cases, willing or unwilling. Agents typically work under the direction of a principal agent or a case officer.
Olga Isabel Gray (28 November 1906 – 19 July 1990) was an English secretary and typist who acted as a double agent in the 1930s after being recruited by MI5 to infiltrate British communist groups. Recruitment