North Atlantic Treaty Organization

• NATO NCI - Communications and Information Agency
• NATO CCDCOE - Cooperative Cyber Defence Centre of Excellence

• DHS - Department of Homeland Security | Created post-9/11
• DoD - Department of Defense
• CISA - Cybersecurity & Infrastructure Security Agency
• CERTUS - Computer Emergency Response Team for the US
• NSA - National Security Agency
• FBI - Federal Bureau of Investigation - Investigates and thwarts cyberattacks and cybercrime
• FBI CAT - Cyber Action Team - Rapid Response Team for Major Digital Attacks

• GRU - Main Intelligence Directorate
• FSB RF - Federal Security Service of the Russian Federation - Successor to the KGB
• SVR RF - Foreign Intelligence Service of the Russian Federation - External, focuses mostly on civilian affairs