March 12, 2026
Ministry of Internal Affairs and Communications
National Police Agency
Ministry of Economy, Trade and Industry Status of Occurrence of Acts of Unauthorized Access and Progress of Research and Development on Technology Relating to Access Control Features

　The National Police Agency (NPA), the Ministry of Internal Affairs and Communications (MIC), and the Ministry of Economy, Trade and Industry (METI) publicize the status of the occurrence of acts of unauthorized access and the progress of research and development on technology relating to access control features, pursuant to Article 10, Paragraph 1 of the Act on Prohibition of Unauthorized Computer Access (Act No. 128 of 1999).

Note: The published materials are in Japanese only.

1. Overview

　To prevent computer-related crimes conducted via telecommunications lines and to maintain the order of telecommunications through access control features, it is imperative to establish an environment that makes unauthorized access difficult.

　Accordingly, the NPA, MIC, and METI publish information on the status of the occurrence of acts of unauthorized computer access and the progress of research and development on technology relating to access control features, pursuant to Article 10, Paragraph 1 of the Act on Prohibition of Unauthorized Computer Access (Act No. 128 of 1999)*.

• * Press releases on this subject are made by the NPA, MIC, and METI.

2. Published information

　(1) and (2) below

• (1) Status of the occurrence of acts of unauthorized access
  　Status of the occurrence of acts of unauthorized access from Wednesday, January 1, 2025, to Wednesday, December 31, 2025
• (2) Progress of research and development on technology relating to access control features
  　Progress of research and development on technology relating to access control features by the NPA, MIC, and METI, private companies, etc. that have been adopted and investigated.