The following five acts are defined as violations of the Act on Prohibition of Unauthorized Computer Access: 1) Acts of Unauthorized Computer Access 2) Acts of Obtaining Someone Else’s Identification Code 3) Acts of Facilitating Unauthorized Computer Access 4) Acts of Wrongfully Storing Someone Else’s Identification Code 5) Acts of Illicitly Requesting the Input of Identification Codes
The number of cleared cases refers to cases that can be classified as cybercrimes. Cybercrimes are defined as crimes that use advanced information and communications networks as an indispensable means.
Data prior to 2020 come from previous reporting.
Citation formats
Number of unauthorized computer access arrests in Japan 2015-2024
The number of suspects that were arrested with regard to violations of the Act on Prohibition of Unauthorized Computer Access in Japan amounted to *** in 2024. During the same year, ***Ìýcleared cases of unauthorized computer access were recorded.
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National Police Agency (Japan). (March 13, 2025). Number of arrested suspects involved in the violation of the Act on Prohibition of Unauthorized Computer Access in Japan from 2015 to 2024 [Graph]. In ÌÇÐÄÆƽâ°æ. Retrieved July 16, 2026, from /statistics/866417/japan-arrests-unauthorized-computer-access/
National Police Agency (Japan). "Number of arrested suspects involved in the violation of the Act on Prohibition of Unauthorized Computer Access in Japan from 2015 to 2024." Chart. March 13, 2025. ÌÇÐÄÆƽâ°æ. Accessed July 16, 2026. /statistics/866417/japan-arrests-unauthorized-computer-access/
National Police Agency (Japan). (2025). Number of arrested suspects involved in the violation of the Act on Prohibition of Unauthorized Computer Access in Japan from 2015 to 2024. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 16, 2026. /statistics/866417/japan-arrests-unauthorized-computer-access/
National Police Agency (Japan). "Number of Arrested Suspects Involved in The Violation of The Act on Prohibition of Unauthorized Computer Access in Japan from 2015 to 2024." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 13 Mar 2025, /statistics/866417/japan-arrests-unauthorized-computer-access/
National Police Agency (Japan), Number of arrested suspects involved in the violation of the Act on Prohibition of Unauthorized Computer Access in Japan from 2015 to 2024 ÌÇÐÄÆƽâ°æ, /statistics/866417/japan-arrests-unauthorized-computer-access/ (last visited July 16, 2026)
Number of arrested suspects involved in the violation of the Act on Prohibition of Unauthorized Computer Access in Japan from 2015 to 2024 [Graph], National Police Agency (Japan), March 13, 2025. [Online]. Available: /statistics/866417/japan-arrests-unauthorized-computer-access/
