Sankei Living Shimbun warns up to about 1.72 million records may have leaked in October breach
On 9 November, Sankei Living Shimbun released follow-up investigation findings on unauthorised access to a server detected on 16 October 2026. Up to approximately 1.72 million personal information records, including duplicates, may have been leaked, with names, addresses, email addresses and hashed passwords among the data involved. Application information for projects commissioned by local authorities may also have been leaked, but neither an actual leak nor the number of people affected has been confirmed.
Key facts
- Affected organisation
- Sankei Living Shimbun
- Incident type
- Data breach
- Occurred / detected
- 2026-10-16
- Scale of damage
- Up to approximately 1.72 million personal information records, including duplicates, may have been leaked (the actual number of leaked records and affected people remains unconfirmed).
- Cause / method
- Not confirmed
- Location
- Japan
If your data was exposed
Exposed dataPassword
- Change your password, and also change it on any other site where you use the same one. Turn on two-factor authentication if available.
Timeline
- The possible leak of up to approximately 1.72 million personal information records, including password hashes, and the impact on several local authorities became known.
1 related reports
The summary and key facts are written by AI from related reports and may contain errors. Check the original articles and the organisation’s official statements for accurate details.