CACrown ArchivesThe cinema collection
Menu
Research dossier · General Reference

National Police Agency Security Bureau

branch of the National Police Agency

Cross-disciplinary reference desk with index cards, atlas, dictionary and catalogue
General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionAug 7, 2026
Entity authorityQ11632280 ↗
Source-derived summary

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.

It supervises the Security Bureau and the Public Security Bureau of the Tokyo Metropolitan Police Department, and Security departments of other Prefectural police headquarters for those issues.

The current chief of the Security Bureau is Hiroki Tsutsui.

Organization

Organization of the Security Bureau is as follows:

Security Department

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. It's also tasked with providing close protection requirements to VIPs.

Security Planning Division (警備企画課, Keibi Kikaku-ka)

Security Coordination Office

Image Data Analysis Office

Intelligence Coordination Analysis Office

Crisis Management Office

Cyber Attack Analysis Center

Public Security Division (公安課, Kōan-ka)

Intelligence Countermeasure Office

Far-Left Countermeasure Office

Far-Right Countermeasure Office

Special Organized Crime Countermeasure Office

Foreign Affairs and Intelligence Department

The Foreign Affairs and Intelligence Department (外事情報部, Gaiji-jōhō-bu) is charged with counter-intelligence, and international counter-terrorism. It has a unit known as YAMA, which has access to classified information based on intercepts from various communications facilities.

Foreign Affairs Division (外事課, Gaiji-ka)

Foreign Affairs Technical Investigation Office

Foreign Affairs Research Office

Foreign Affairs Special Case Countermeasure Office

Unauthorized Export Countermeasure Office

Counter International Terrorism Division (国際テロリズム対策課, Kokusai Terorizumu Taisaku-ka)

Counter International Terrorism Countermeasure Office

Security Operations Department

The Security Operations Department (警備運用部, Keibi-unyō-bu) replaced the former Security Division (警備課, Keibi-ka) in 2019. It's mandated with security and protecting VIPs (1st Division) and response to large-scale disaster or terrorism (2nd Division).

First Security Operations Division (警備第一課, Keibi Daiichi-ka)

Second Security Operations Division (警備第二課, Keibi Daini-ka)

Training

Prospective SB officers are trained at the National Police Academy in intelligence gathering techniques.

Editorial summary

The public source identifies “National Police Agency Security Bureau” as branch of the National Police Agency. This brief keeps that definition visible, then builds a research path around National, Police and Agency.

Editorial reviewA concise reference frame for defining the subject, testing terminology and identifying the institution closest to the evidence. The current lead gives the account dated anchors—2019—that can be checked directly. The selected authority fields contribute no independent date. Its value is orientation rather than verdict, with National, Police and Agency providing the first useful test.
Editorial analysis

Why this record matters

A short description can identify a subject without explaining its stakes. For “National Police Agency Security Bureau”, the useful work is to connect “branch of the National Police Agency” to the records capable of establishing context and consequence.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Aug 7, 2026. The linked authority identifier is Q11632280. None of the 0 selected statements returned an explicit reference. The first chronological checks are 2019.

Critical limits

The absence of detail may reflect summary conventions rather than a lack of surviving documentation. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

Best used for
  • Subject orientation
  • Search vocabulary
  • Locating named sources
Verify next

The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “National Police Agency Security Bureau”, its source revision and the description used here.
  2. Expand the search: follow National Police Agency Security Bureau primary sources, National Police Agency Security Bureau archive and National research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “National Police Agency Security Bureau”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
Subject index

Search terms from this dossier

Source & attribution

This entry incorporates text from “National Police Agency Security Bureau” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.