A threat actor named Zmata claimed to have sold a 106 GB Telefónica dataset on the dark web, resulting from a Jira misconfiguration. The breach exposed sensitive data including customer and employee information, internal communications, source code, and corporate documents. #Telefónica #DarkWebSale
Keypoints
- Zmata claimed responsibility for selling Telefónica’s data on a dark web marketplace.
- The breach occurred due to a Jira misconfiguration on May 30, 2025.
- Threat actor exfiltrated over 385,000 files during 12 hours of unauthorized access.
- The compromised dataset includes customer identities, employee info, source code, and confidential documents.
- The incident highlights risks associated with internal system misconfigurations.
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