Japan's Aeon Cybersecurity Incident

Japan's Aeon detects unauthorized access at 42 websites of 13 group companies.

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Oct 21, 2026

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Japan's Aeon Cybersecurity Incident

Japan's Aeon detects unauthorized access at 42 websites of 13 group companies.

In brief

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 companies but sales and e-commerce systems remain unaffected. Originally reported by BigGo Finance.

Aeon detects unauthorized access

Japan's Aeon detects unauthorized access at 42 websites of 13 group companies; sales and e-commerce systems unaffected

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 systems unaffected

Sales-related systems and e-commerce sites have not been affected by the unauthorized access.

What matters most

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

Read the original on BigGo Finance

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