Asahi ransomware attack disrupts Japanese production amid data leak concerns
Asahi Group suffered a cyber-attack in September 2025 that disrupted production and dispatches in Japan, and subsequently confirmed that it was a ransomware attack. The ransomware group Qilin claimed responsibility, while the company kept operations running through manual processes. By July 2026, the number of personal information records potentially exposed had increased to 2.28 million.
Key facts
- Affected organisation
- Asahi Group Holdings
- Incident type
- Ransomware
- Occurred / detected
- 2025-09
- Scale of damage
- Potential exposure of 2.28 million personal information records and disruption to production and dispatches in Japan
- Cause / method
- Ransomware attack
- Location
- Japan
Timeline
- Reports emerged that Asahi Group was having difficulty resuming production following a cyber-attack.
- Asahi Group confirmed a ransomware attack.
- The ransomware group Qilin claimed responsibility for the attack on Asahi Group.
- It emerged that approximately 1.91 million personal information records may have been leaked.
- The number of personal information records potentially exposed increased to 2.28 million.
Also affected by this incident
Asahi cyber-attack leaves Seven-Eleven Japan short of beer
↳ Knock-on damage from the Asahi Group Holdings incident · View original incidentImpact: Shortage of Super Dry beer
Seven-Eleven Japan ran short of Super Dry beer in the wake of a cyber-attack on Asahi. The beer shortage came to light on 2 October 2025.
Read on Bloomberg.com ↗
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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.