European Commission Confirms AWS Cloud Breach

The European Commission has confirmed a cyberattack targeting its cloud infrastructure after a threat actor claimed to have stolen over 350 gigabytes of data from the institution's Amazon Web Services environment.

On March 24, 2026, the Commission detected unauthorized access to cloud infrastructure hosting its Europa.eu websites. The attacker reached out to BleepingComputer earlier this week with evidence of the intrusion, providing screenshots showing access to employee data and an email server.

What Was Compromised?

According to the threat actor's claims, the stolen data includes multiple databases containing employee information. The screenshots shared as proof of access appeared to show personal data fields and email server access, though the Commission has not confirmed the full extent of what was exfiltrated.

The Europa.eu domain hosts websites for all EU institutions and agencies, making it a high-value target. The cloud environment in question appears to be separate from the Commission's core administrative systems, though the investigation is ongoing.

How the Attack Occurred

Details on the initial access vector remain scarce. The Commission confirmed the incident affected "cloud infrastructure" associated with its web properties but has not disclosed whether the breach resulted from misconfigured storage buckets, compromised credentials, or exploitation of a vulnerability.

AWS cloud breaches frequently stem from exposed credentials in code repositories, overly permissive IAM policies, or misconfigured S3 buckets that inadvertently expose data to the public internet. Security researchers regularly discover exposed cloud storage belonging to large organizations, sometimes containing sensitive employee or citizen data.

Commission's Response

The European Commission is investigating the breach with relevant cybersecurity authorities. In a statement to TechCrunch, a Commission spokesperson acknowledged the attack but declined to provide specifics while the investigation continues.

The incident follows a pattern of attacks against European government institutions. The IPIDEA proxy network disruption Google executed earlier this year similarly highlighted how attackers leverage cloud infrastructure against high-profile targets.

Why This Matters

A successful breach of EU Commission infrastructure carries implications beyond the immediate data exposure. The Commission handles sensitive policy discussions, trade negotiations, and regulatory decisions affecting hundreds of millions of people. Even partial access to employee databases could enable targeted phishing campaigns against Commission staff.

The timing is notable given heightened geopolitical tensions in Europe. As we noted in our coverage of Russian GRU attacks disrupted by Amazon, nation-state actors have increasingly targeted European government infrastructure over the past year.

For security teams managing cloud infrastructure, this incident reinforces the importance of strict IAM controls, regular credential rotation, and comprehensive logging. Organizations handling sensitive data should review our online safety guide for baseline security practices.

The investigation continues, and the Commission has not yet notified affected individuals or disclosed whether the attacker made any ransom demands.