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Breaches & RansomwareEmerging1 sourceSep 18, 2026 · 17:10via Security Affairs

Gyazo Data Breach Exposes 23 Million User Records

Brief

A Gyazo breach exposed 23 million user records after attackers exploited a vulnerability in Helpfeel’s image upload server.

Japanese software company Helpfeel is notifying Gyazo users about a data breach that compromised 23 million user records. Attackers gained unauthorized access by exploiting a vulnerability in the service’s image upload server.

“We have confirmed that approximately 23. 62 million records containing data related to Gyazo users were disclosed without authorization.” notice of data breach .

Gyazo is a popular cross-platform tool for capturing screenshots, GIFs and short screen recordings and instantly sharing them through links. The incident highlights the risks of vulnerabilities in systems that handle and store user-generated content.

Helpfeel said this week that it recently discovered unauthorized access to its Gyazo servers.

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