Gyazo Data Breach Exposes 23.62 Million User Records

corp.helpfeel.com

Gyazo Data Breach Exposes 23.62 Million User Records

First seen 17 Sep 2026, 14:27 UTC • •69.0

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ThreatCluster •September 18, 2026 at 12:57 UTC

•23.62 million user records and 490 million image metadata records exposed in the breach.
•Unauthorized access was gained through a vulnerability in Gyazo's image upload server.
•Users are advised to change passwords and monitor for suspicious activity.

Helpfeel Inc. confirmed a data breach affecting its image-sharing service Gyazo, which exposed approximately 23.62 million user records and 490 million image metadata records. The breach occurred due to a vulnerability in Gyazo's image upload server, allowing unauthorized access to the database. The company detected suspicious activity on September 11, 2026, and blocked the access routes by September 12. The leaked user information includes names, email addresses, and integration tokens, while the image metadata primarily consists of image IDs and related data. Helpfeel has advised users to change their passwords and monitor for suspicious activity. The investigation is ongoing, and the company has temporarily disabled viewing for some images to prevent further unauthorized access.

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Updated 48d ago How this analysis works

Timeline

2026-09-11

Unauthorized access detected

Gyazo detected suspicious activity indicating unauthorized access to its systems.

2026-09-12

Access routes blocked

Helpfeel blocked the identified access routes and terminated unauthorized connections.

2026-09-16

Breach details announced

Helpfeel confirmed the breach, detailing the scope and types of exposed data in a public notice.

More articles in this cluster (18)

Threat Graph

5 entities, 4 inferred relationships (STIX 2.1).

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Technique (2)

Data Breach
T1059 - Command and Scripting Interpreter

Organization (2)

Gyazo
Helpfeel

Weakness (1)

CWE-200 - Exposure of Sensitive Information

Relationships

Data Breach related to Gyazo
Data Breach related to Helpfeel
Data Breach related to CWE-200 - Exposure of Sensitive Information
Data Breach related to T1059 - Command and Scripting Interpreter

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