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Gyazo

Disclosed Sep 16, 202623,620,000 affectedConfirmed

Official notice

Gyazo server flaw exploited to steal 23.62 million user records

Screenshot service Gyazo, run by Helpfeel, said an attacker exploited a server vulnerability and stole 23.62 million user records, including emails, password hashes, session IDs and X tokens, plus 490 million image metadata records. The service was suspended for maintenance.

What is known

People affected23,620,000 (as reported by the organization)
DisclosedSep 16, 2026
DiscoveredSep 12, 2026
AttackHacking
Data exposedNamesEmailsPasswordsCredentials and tokensIP addressesLocationOther
SectorTech · JP
StatusConfirmed

Sources

Notices filed

History of this record
Added2026-09-25
First recordedby seedSource

First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.

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