European Commission Suffers Major Data Breach Through Cloud Account Compromise
The European Commission experienced a significant cyberattack on its cloud infrastructure, with attackers stealing over 350GB of sensitive data including emails, databases, and confidential documents. Since AWS confirmed no security event on their platform, the breach likely resulted from compromised credentials or misconfigured cloud services rather than a platform vulnerability. This incident highlights the critical importance of proper cloud security hygiene, as even sophisticated organizations can fall victim to basic access control and configuration failures. The fact that this is the EC's second confirmed breach in 2025 suggests systemic security control gaps that require immediate attention.
Tactical Insight
Immediate actions
- Audit all cloud service configurations and disable unnecessary public access
- Enable multi-factor authentication on all administrative and privileged accounts
- Review and rotate all service account credentials and API keys
Long-term improvements
- Implement least-privilege access policies with regular access reviews
- Deploy cloud security posture management (CSPM) tools for continuous configuration monitoring
- Establish cloud security baselines and automated compliance checking
Detection measures
- Enable comprehensive cloud audit logging and real-time alerting for suspicious activities
- Deploy user and entity behavior analytics (UEBA) to detect compromised accounts