securityonline.info 8/27/2026, 9:30:49 AM · external

Mercor breach allegedly leaks 4 TB of user data and logs

Mercor breach allegedly leaks 4 TB of user data and logs
CyberSIXT Evidence Panel Source marked as original reporting

THE article discusses a recent data breach involving the American recruiting firm Mercor, which allegedly suffered an attack resulting in the exfiltration of 4 terabytes of sensitive data. This breach, reportedly involving partnerships with major companies like OpenAI, Google, and Microsoft, exposes internal user activity logs, confidential account credentials, and roles within the organization, raising security concerns over targeted attacks.

Despite claims from cybercriminals, the authenticity of the data has not been confirmed by Mercor or cybersecurity experts. The article highlights the risks posed by role-based data exposure and the need for independent verification of the claims.

View full article

Article by CyberSIXT