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JAENES
SLeak confirmedJuly 31, 2026 announced

千（はいチーズ!フォト）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
June 4, 2026
Announced on
July 31, 2026
Severity
SCompromise of deep personal data or usable credentials.
Scale
Unknown
Main impact
「はいチーズ！フォト」 suffered unauthorized access from the evening of 2026-06-04 to the morning of 2026-06-05, and a leak of personal information related to some orders was confirmed. The photo sales system was suspended from 2026-06-05 at noon and resumed on 2026-06-08 in the morning.
Information involved
Phone numberHome addressFull name
Cause / key point
It is reported to have been caused by unauthorized access from the evening of 2026-06-04 to the morning of 2026-06-05.
Industry
Services & other
Listing / capital
Unlisted
Sources
Last updated
October 20, 2026
Phone numberHome addressFull nameHow 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: Unauthorized access (method undisclosed)(Breached, but the technique was not identified or disclosed)

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