2023年4月16日 · MI5 and MI6 are two of the United Kingdom’s intelligence agencies. They have different roles, with MI5 responsible for domestic security whereas MI6 is responsible for foreign intelligence gathering.

MI7 was a branch of the British War Office’s Directorate of Military Intelligence with responsibilities for press liaison and propaganda. The branch was originally established in the First World War and disbanded after the signing of the Armistice.

MI5 is responsible for protecting UK citizens and interests at home, notably against threats to national security. By contrast, MI6 (also referred to as the Secret Intelligence Service) is responsible for gathering intelligence outside the UK in support of the government’s foreign and defence policies.

"MI5" is used as the short form name of the Security Service, and is included in the agency's logo and web address. MI6 is included as an alias on the Secret Intelligence Service website, though the official abbreviation, SIS, is predominant.

英国秘密情报局（Secret Intelligence Service，SIS），常被称为军情六处或军情六局（Military Intelligence, Section 6，MI6），是英国对外情报机构，主要作用是根据联合情报委员会的要求和部长们的批准，就涉及英国安全、国防、外交和经济政策等重大利益的问题提供秘密 ...

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).

2023年7月10日 · MI5 vs MI6 Key Differences. MI5 and MI6 are two intelligence agencies in the United Kingdom, but they have different roles and responsibilities. Let’s break down the differences between them in simpler terms. MI5 is like the …

What is the difference between MI5 and MI6 (SIS)? MI5 and MI6 are both intelligence agencies and often work closely together, but we have different missions. MI5 protects the UK's...

另一个很出名的军情五处（mi5）也有类似的历史，mi5、mi6出自同一个军事理事会，但mi5属于英国内政部，可以理解为对内的情报机关（国家安全局）。 曾经办公地点在伦敦的Curzon street，1994搬至泰晤士大厦。

Find out about the core threats to national security that MI5 exists to protect against. Discover how MI5 works to protect against threats to national security through intelligence gathering...