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JAENES
APossible leakJanuary 29, 2026 announced

カンバスData breach / unauthorized access incident

笹尾 祐太朗の写真Reviewed by Yutaro SasaoWritten by Leak Watch editorial team published ・ updated
Occurred on
January 6, 2026
Announced on
January 29, 2026
Severity
AFinancial and HR records — information that easily translates into monetary damage.
Scale
Unknown
Main impact
マイページ handling licenses etc. was suspended; temporary tickets were issued manually and it was restored on January 14. There was no impact on the core system.
Information involved
Not specified in the disclosure
Cause / key point
An intrusion believed to have exploited a vulnerability in a framework used by the system.About Exploitation of vulnerabilities
Industry
Transport & travel
Listing / capital
Unlisted
Sources
Last updated
October 20, 2026
How severity is assessed →

Is this incident worth paying attention to?

Written & reviewed

笹尾 祐太朗の写真

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: Exploitation of vulnerabilities(Breaking in through holes in software and devices)

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