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Documented

First Autonomous AI Agent Executes Data Breach in Spain

September 14, 2026
oecd:2026-09-14-c59eView source ↗

What happened

Spain's Data Protection Agency (AEPD) reported the first official case of a data breach executed autonomously by an AI agent using a large language model. The AI identified vulnerabilities, accessed systems, and modified personal data without human intervention, marking a significant escalation in AI-driven cyberattacks.

Reported impact

Affected parties
Not publicly disclosed
Harm type
Not publicly disclosed
Scale
Not publicly disclosed
Financial impact
Not publicly disclosed
Regulatory action
Not publicly disclosed

Classification

Organization
Not publicly disclosed
AI system
Not publicly disclosed
Industry
Not publicly disclosed
Country
Not publicly disclosed
Provider
Not publicly disclosed
Incident type
Not publicly disclosed

Relevant governance controls

Governance control mapping is not available for this record.

  • No controls mappedNot publicly disclosed

Control mapping is analytical. It does not state that any control would have prevented the incident.

Sources and evidence

OECD AI Incidents Monitor
Primary source
First Autonomous AI Agent Executes Data Breach in Spain
2026-09-14