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JAENES
BPossible leakAugust 3, 2026 announced

M&Sフードサービス（宮本むなし）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
Unconfirmed
Announced on
August 3, 2026
Severity
BIncidents centered on names and contact details.
Scale
1,030 people
Main impact
Contact details and ordered items and amounts for 1,030 people may have been exposed. Payment information is reported not to be included.
Information involved
Card & payment data
Cause / key point
Cause is under investigation.
Industry
Food & dining
Listing / capital
Unlisted
Sources
Last updated
October 20, 2026
Card & payment dataHow 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: Under investigation / not stated(Cause not disclosed)

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