Discover how MI5 works to protect against threats to national security through intelligence gathering techniques, partnerships and legislation. Find out how you can play your part in keeping the...

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).

The four main agencies are the Secret Intelligence Service (SIS or MI6), the Security Service (MI5), the Government Communications Headquarters (GCHQ) and Defence Intelligence (DI). The agencies are organised under three government departments, the Foreign Office, the Home Office and the Ministry of Defence.

2024年10月8日 · MI5 Director General Ken McCallum today gave his latest update on the current national security threats facing the UK. Speaking from the Counter Terrorism Operations Centre (CTOC) in...

英國安全局 （英語： Security Service ），別稱「軍情五處」（英語： Military Intelligence, Section 5 ，縮寫：MI5） [2] ，是英國的國家安全機關，在 聯合情報委員會 （ 英语 ： Joint Intelligence Committee (United Kingdom) ） （由英國內閣辦公廳、內政大臣統轄）領導下運 …

2024年10月8日 · MI5 Director General Ken McCallum said his agents and police have tackled 20 “potentially lethal” plots backed by Iran since 2022 and warned that it could expand its targets in the United Kingdom if conflicts in the Middle East deepen. So far, the threats have been aimed at Iranians abroad who oppose the country’s authorities.

2025年3月7日 · MI5, intelligence agency charged with internal security and domestic counterintelligence activities of the United Kingdom. It is authorized to investigate any person or movement that might threaten the country’s security. Although MI5 is responsible for domestic counterespionage, it has no powers

2024年10月8日 · MI5 Director General Ken McCallum has delivered his latest update on the current national security threats facing the UK. Speeches and statements | State threats | Terrorism Filter

The Security Service, commonly known as MI5, is one of three British intelligence agencies. It is the security agency responsible for counter-intelligence inside the United Kingdom. It gives the government information about hostile activities inside the UK.

2025年1月24日 · MI5's tips for spies and Cambridge Five confessions revealed The newly-declassified documents include details about some of the UK's most notorious spies. 14 Jan 2025