# Japan's Aeon Cybersecurity Incident

> Japan's Aeon detects unauthorized access at 42 websites of 13 group companies.
- Title: Japan's Aeon Cybersecurity Incident · BigGo Finance | Shortify
- Summary: Japan's Aeon detects unauthorized access at 42 websites of 13 group companies. Japan's Aeon found unauthorized access at 42 websites across 13 group…
- Keywords: aeon, aeon retail, aeon big, maxvalu hokuriku, unauthorized access, cybersecurity incident, sales systems, e-commerce, finance, markets, Japan's, Cybersecurity
- Source: BigGo Finance — https://finance.biggo.com/news/1fddeff9-6706-45eb-894e-ce97e9556319
- Author: BigGo Finance
- Published: 2026-10-21T14:25:07+00:00
- Read time: 1 min
- Topics: aeon, aeon retail, aeon big, maxvalu hokuriku, unauthorized access, cybersecurity incident, sales systems, e-commerce, finance, markets
## Aeon detects unauthorized access
Japan's Aeon detected unauthorized access by a third party at 42 websites operated by 13 group companies.
## System malfunction confirmed
A system malfunction was confirmed on the 20th, and the affected sites have been made inaccessible for safety.
## Investigation underway
Aeon is investigating the cause, timing of the intrusion, and whether personal information was leaked.
## Sales systems unaffected
Sales-related systems and e-commerce sites have not been affected by the unauthorized access.
## Key takeaway

Japan's Aeon found unauthorized access at 42 websites across 13 group companies but sales and e-commerce systems remain unaffected.