アサヒグループホールディングスData breach / unauthorized access incident
- Occurred on
- September 29, 2025
- Announced on
- July 17, 2026
- Severity
- SCompromise of deep personal data or usable credentials.
- Scale
- 1,525,000 records
- Main impact
- Due to a cyberattack, there was a risk of leakage of 152.5万件 of customer support records and 37.8万件 of vendor-related information, and exfiltration from some PCs was also confirmed. Order intake and shipping were handled manually for 約2か月強.
- Information involved
- Email addressHome addressFull nameDate of birth
- Cause / key point
- Ransomware attack caused by intrusion via network equipment.About Ransomware
- Industry
- Food & dining
- Listing / capital
- Listed company東証プライム 2502(アサヒグループホールディングス)
- Sources
- Last updated
- October 20, 2026
Stock price reaction to the disclosureアサヒグループホールディングス / 東証プライム 2502
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Written & reviewed
Reviewed byYutaro SasaoFounder & CEO, MediaLeap Inc.
CEO of MediaLeap Inc. Working on both sides of web advertising and web media since 2013; founded the company in May 2025.
Review scope: cross-checking against primary sources (official and government announcements), verifying claims stay within the facts, and checking source attribution。Last reviewed:
Written by:Leak Watch editorial team (AI-assisted drafts verified against sources by the editorial team) · Reviewer profile · Request a correction
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Attack method classification: Ransomware(Encrypting data and demanding a ransom)
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