EC Cloud Breach Exposes Europe's Own US Dependency

The European Commission detected a cyberattack on March 24 targeting the cloud infrastructure behind its Europa.eu websites. Four days later, ShinyHunters, a well-known extortion group, claimed responsibility and published what they say is over 350 GB of stolen data, including mail server exports, database backups, confidential documents, and contracts. The Commission confirmed that "data have been taken from those websites."

The breach matters on its own. But for anyone tracking Europe's digital sovereignty debate, the uncomfortable detail is where the compromised infrastructure runs: Amazon Web Services.

The Institution Writing Sovereignty Rules Uses US Cloud

The European Commission is the driving force behind GDPR, the Digital Markets Act, the AI Act, and the forthcoming Cloud and AI Development Act. It's the body that fined Apple and Meta hundreds of millions for DMA violations. It's the institution whose own officials have warned that the US CLOUD Act allows American authorities to compel access to data stored by US companies, regardless of where that data physically sits.

And yet, Europa.eu, the Commission's public-facing web platform serving 450 million EU citizens, runs on AWS. An AWS spokesperson told reporters the company "did not suffer a security incident," suggesting the breach exploited Commission-side vulnerabilities rather than AWS infrastructure. That distinction matters technically. It doesn't resolve the sovereignty contradiction.

What ShinyHunters Actually Took

ShinyHunters released an archive they claim exceeds 350 GB, containing mail server dumps, database exports, internal documents, and contracts. Independent verification of the full dataset hasn't been completed due to its size. The Commission confirmed the attack was "quickly contained" and that internal systems beyond the Europa.eu web platform were not affected.

The group is no newcomer. ShinyHunters has previously targeted major corporations through social engineering and credential theft, typically focusing on SaaS platforms and cloud storage. Their tactics work best against sprawling, multi-vendor cloud environments — the kind large organizations routinely struggle to secure.

Why This Matters

Europe's sovereign cloud market stands at roughly 15% of total European cloud spending, with AWS, Microsoft Azure, and Google Cloud controlling the other 70%. Just days before this breach, the European Central Bank chose OVHcloud and Scaleway for its digital euro infrastructure, explicitly excluding US providers. CISPE, the European cloud trade body, has been urging the Commission to enshrine sovereignty-by-control (not sovereignty-by-location) into the upcoming Cloud and AI Development Act.

This breach won't change procurement overnight. But it does hand sovereignty advocates a concrete, uncomfortable example: the EU's own executive couldn't protect its data on US infrastructure. For IT leaders evaluating cloud providers, it's one more data point suggesting that where your cloud provider is headquartered, and which laws govern it, should be part of the security conversation.

Sources

• TechCrunch: European Commission confirms cyberattack
• Security Affairs: ShinyHunters claims the hack
• Hackread: ShinyHunters 350GB data breach