三菱自動車Data breach / unauthorized access incident
- Occurred on
- October 9, 2026
- Announced on
- October 30, 2026
- Severity
- BIncidents centered on names and contact details.
- Scale
- 24,480 records
- Main impact
- Customer information for two dealerships may have been viewed by third parties, and at least 2万4480件分 of names, transaction histories, and purchased vehicle information may have been leaked. No payment information leakage has been confirmed.
- Information involved
- Full name
- Cause / key point
- Unauthorized access caused by a third-party illicit login to Microsoft 365 used by dealership employees, which allowed customer information within the accounts to be viewed.About Abuse of credentials
- Industry
- Manufacturing
- Listing / capital
- Listed company7211
- Sources
- Last updated
- October 31, 2026
Stock price reaction to the disclosure三菱自動車 7211
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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: Abuse of credentials(Logging in legitimately with leaked or guessed passwords)
Read the Abuse of credentials guide and national trends →