City of Osaka suffers data breach impacting one million residents

# City of Osaka suffers data breach impacting one million residents

https://gcdradar.vercel.app/incidents/city-of-osaka-suffers-data-breach-impacting-one-million-resi · AIR-2026-1970 · live

- Lane: Breaches & attacks
- Severity: 4 (Confirmed real-world loss): Confirmed data breach impacting one million individuals.
- Fix status: No fix needed
- First reported: 2026-11-13
- AI role: No AI role
- Products: City of Osaka municipal systems

## Summary

The City of Osaka announced a data breach affecting one million people and warned residents about suspicious phishing emails. Officials are investigating the intrusion and urging vigilance against fraudulent messages.

## What to do

Warn residents to ignore suspicious emails claiming to be from the local government.

## Latest updates

- 2026-11-13: City of Osaka warns of data breach impacting 1 million as Japan reels from dozens of cyber incidents (https://therecord.media/city-of-osaka-japan-email-data-breach)

## Sources

- 2026-11-13 The Record: City of Osaka warns of data breach impacting 1 million as Japan reels from dozens of cyber incidents https://therecord.media/city-of-osaka-japan-email-data-breach

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