Skip to content
JAENES
BPossible leakSeptember 1, 2026 announced

ペーパーロジック（paperlogic）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
September 1, 2026
Severity
BIncidents centered on names and contact details.
Scale
Unknown
Main impact
An unauthorized access to cloud servers prompted an emergency shutdown of systems, but a follow-up announcement stated no traces were found of acquisition or external transmission of customer documents, personal information, or authentication credentials.
Information involved
Auth token
Cause / key point
Cause is under investigation.About Abuse of credentials
Industry
IT & telecom
Listing / capital
Unlisted
Sources
Last updated
October 20, 2026
Auth tokenHow 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

Related incidents

Browse the database →

Incidents sharing the same company, service, attack method or industry (grouped automatically from the disclosures).

Incidents related to "クラウドサーバー"

Incidents where the damage spread through the same service or system.

Same attack method

Same industry

Attack method classification: Abuse of credentials(Logging in legitimately with leaked or guessed passwords)

Read the Abuse of credentials guide and national trends →

← Back to Breach Watch