The European Commission has confirmed a cyberattack targeting its cloud infrastructure, with early findings pointing to possible data exposure.
Quick Summary – TLDR:
- European Commission cloud systems hosted on AWS were breached.
- Attackers may have stolen over 350 GB of data including databases.
- Internal systems were not affected due to strong network separation.
- Investigation is ongoing as EU strengthens cybersecurity defenses.
What Happened?
The European Commission confirmed a cyberattack affecting its cloud infrastructure that supports its public websites. The breach was quickly contained, and internal systems remained secure, but early findings suggest that some data may have been accessed.
The European Commission has confirmed a cyberattack on its AWS cloud infrastructure.
— Pirat_Nation 🔴 (@Pirat_Nation) March 27, 2026
Hackers claimed to have stolen hundreds of gigabytes of data, including databases, and shared screenshots as evidence.
This is the second major cyber incident for the EC in 2026. pic.twitter.com/4Hrn33TDCS
Cyberattack Targeted Public Cloud Infrastructure
The data breach was discovered on March 24 and impacted the external cloud environment that powers the Commission’s Europa.eu websites. Despite the unauthorized access, services remained operational with no downtime reported.
Officials clarified that the attack was limited to the public facing cloud systems. The internal IT network and sensitive administrative systems were not impacted. This was largely due to strict separation between external cloud environments and internal infrastructure.
Security teams acted quickly after detecting unusual activity. Immediate containment measures were deployed to secure affected systems and prevent further access.
Data Theft Claims Raise Concerns
While the Commission has not confirmed the exact volume of stolen data, a threat actor claimed responsibility and alleged that over 350 GB of data was exfiltrated. This reportedly includes multiple databases and internal information.
The attacker also shared screenshots as proof, suggesting access to employee related data and internal email systems. However, the full scope and sensitivity of the stolen data remain unclear.
In a public statement, the Commission said, “Early findings of our ongoing investigation suggest that data have been taken from those websites. The Commission is duly notifying the Union entities who might have been affected by the incident.”
Interestingly, the attacker stated they do not intend to extort the Commission but may release the data publicly at a later stage. This adds uncertainty and potential long term risk.
AWS Denies Platform Level Breach
Amazon Web Services responded to the incident by stating that its platform was not compromised. According to AWS, its services “operated as designed,” indicating that the breach likely resulted from misconfigured or compromised accounts rather than a failure in AWS infrastructure.
This distinction is important as it highlights how cloud security often depends on how services are configured and managed by users.
Incident Response and Ongoing Investigation
The Commission has launched a full investigation to understand how the attackers gained access and what data may have been affected. Cybersecurity teams are continuing forensic analysis and monitoring for any signs of persistent threats.
Impacted EU entities are being notified so they can take precautionary measures. This includes monitoring for suspicious activity and potential misuse of compromised data.
The Commission also stated that insights from this incident will be used to strengthen its cloud security architecture and improve defenses against future attacks.
Part of a Larger Cyber Threat Landscape
This breach comes amid a growing wave of cyberattacks targeting European institutions. Earlier this year, the Commission also dealt with another security incident involving its mobile device management platform.
That attack was linked to vulnerabilities in widely used enterprise software and affected multiple government organizations across Europe.
The timing is notable, as the European Union has been actively pushing for stronger cybersecurity laws. These efforts aim to protect critical infrastructure and counter increasingly sophisticated cyber threats.
SQ Magazine Takeaway
I see this as a clear reminder that even the most powerful institutions are not immune to cloud based attacks. The fact that internal systems stayed safe shows that good architecture decisions really matter.
But the claimed scale of data theft is worrying. Even if the attacker does not demand ransom, a public data leak could create serious risks down the line. For me, this story highlights one simple truth. Cloud security is not just about the provider. It is about how well you manage and secure your own environment.
