The National Police Agency Security Bureau (警察庁警備局, Keisatsu-chō Keibi-kyoku) is a bureau of the National Police Agency in charge of national-level internal security affairs.
Organization of the Security Bureau is as follows:[5] The Security Department (警備部, Keibi-bu) is charged with internal counter-terrorism, countering cybercrime and surveillance of potentially threatening groups, organisations, and social phenomena.
[6] The Foreign Affairs and Intelligence Department (外事情報部, Gaiji-jōhō-bu) is charged with counter-intelligence, and international counter-terrorism.
[7] It has a unit known as YAMA, which has access to classified information based on intercepts from various communications facilities.
Prospective SB officers are trained at the National Police Academy in intelligence gathering techniques.