Plausible Denial
A reference on the world's intelligence services and what they have done.
Plausible Denial is an editorial reference site on the world's intelligence services. The site is organised around three indexes: countries (the national intelligence apparatus, by state), agencies (every service on the site, in alphabetical order), and dossiers (operations, scandals, and themes that cross agency or country lines).
Each agency entry carries a structured reference apparatus — founding date and statutory citation, jurisdiction, parent ministry, headquarters, predecessor services, links to official channels — and a body that walks through role, history, and notable operations. Operations are categorised confirmed, alleged, or disputed, footnoted to primary documents and the most defensible secondary record. The full sourcing standard is set out on the methodology page.
Central Intelligence Agency
The principal foreign human-intelligence and covert-action service of the United States, created in 1947 as successor to the wartime Office of Strategic Services.
National Security Agency
The signals-intelligence and information-security agency of the United States, established in 1952 by classified executive order and disclosed publicly only in 1957.
Federal Bureau of Investigation
The principal domestic intelligence and federal law-enforcement agency of the United States, with statutory authority for counterintelligence, counter-terrorism, and federal criminal investigation.
Secret Intelligence Service
The United Kingdom's foreign human-intelligence service, popularly known as MI6, established in 1909 as the foreign section of the Secret Service Bureau.
Security Service
The United Kingdom's domestic security service, popularly known as MI5, responsible for counter-intelligence, counter-terrorism, and protection of national security inside the United Kingdom.
Government Communications Headquarters
The United Kingdom's signals-intelligence, cryptography, and cyber-security agency, with origins in the wartime Government Code and Cypher School at Bletchley Park.
Mossad
Israel's foreign intelligence service — formally the Institute for Intelligence and Special Operations — reporting directly to the Prime Minister and responsible for foreign HUMINT, covert action, and counter-terrorism abroad.
Federal Security Service
The Russian Federation's principal domestic security and counter-intelligence service, successor to the KGB and headquartered at the Lubyanka in Moscow.
Australia
3
Canada
2
China
3
Egypt
1
France
2
Germany
2
India
2
Iran
2
Iraq
1
Israel
3
Jordan
1
Morocco
2
New Zealand
2
North Korea (DPRK)
1
Pakistan
1
Russia
3
Saudi Arabia
1
Syria
1
Türkiye (Turkey)
1
United Arab Emirates
1
United Kingdom
3
United States
20
The Shadow Brokers
The substantive institutional disclosure sequence by the substantive entity self-designated The Shadow Brokers across August 2016 through April 2017 of substantive NSA Tailored Access Operations hacking tools — substantively the operational cyber-weapons inventory of the substantive Equation Group — including the substantive ETERNALBLUE, DOUBLEPULSAR, ETERNALROMANCE, EXPLODINGCAN, and adjacent substantive substantively-major exploits and persistence frameworks. The substantive operational consequences across the May 2017 WannaCry ransomware (North Korean Lazarus Group) and the substantive June 2017 NotPetya destructive-malware (Russian GRU Sandworm Team) substantively destroyed institutional infrastructure across approximately 200,000 systems in 150 countries with documented damages substantively exceeding $10 billion.
Tempora
The UK Government Communications Headquarters' bulk-collection programme operating from approximately 2008 onward at the substantive UK fibre-optic-cable landing-points to substantively intercept and substantively buffer the bulk internet-and-telephone-traffic transiting the substantive UK telecommunications infrastructure. The substantive operational successor to the substantive earlier Mastering the Internet and Global Telecoms Exploitation institutional programmes; substantively disclosed by Edward Snowden in June 2013.
PRISM and Upstream
The two NSA collection programmes operating under Foreign Intelligence Surveillance Act Section 702 — PRISM (downstream collection of communications from US technology providers including Microsoft, Yahoo, Google, Facebook, and Apple, beginning September 2007) and Upstream (backbone collection at US telecommunications-partner facilities under codenames including BLARNEY, FAIRVIEW, OAKSTAR, and STORMBREW) — that constitute the operational core of post-2008 US foreign-intelligence internet collection. Disclosed by Edward Snowden in June 2013; substantially documented in subsequent FISA Court declassifications, Privacy and Civil Liberties Oversight Board reports, and academic-and-policy literature.