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Spain’s data-protection authority, the AEPD, received what it described as the country’s first reported personal-data breach involving an autonomous AI agent. An individual allegedly used an agent based on an unnamed, well-known large language model to scan generic files for vulnerabilities, authenticate to the target environment, identify additional weaknesses, obtain read/write access, alter personal data, and access invoices. The AEPD did not identify the affected organization, model provider, vulnerabilities exploited, or the breach’s scale, and emphasized that the incident did not indicate compromise of the AI provider.
AEPD president Francisco Pérez Bes said agent-driven automation can rapidly chain reconnaissance, exploitation, and post-compromise activity, increasing the speed, probability, and scale of cyberattacks. The authority urged organizations to explicitly account for AI-enabled attacks in security and privacy risk assessments, strengthen protection of credentials and API keys, limit access to sensitive data, minimize retained data, and improve rapid detection, containment, incident response, and vulnerability remediation.
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In a blog post, AEPD official Francisco Pérez Bes described the agency's first notification of a personal-data breach allegedly involving an autonomous AI agent. The AEPD urged organizations to explicitly address AI-enabled attacks in risk assessments and strengthen rapid detection, containment, remediation, access controls, and protection of credentials and API keys.
An individual allegedly used an AI agent backed by an unnamed well-known language model to scan for vulnerabilities, authenticate to an unnamed organization, find additional flaws, and gain read/write access to files containing personal data and invoices. The agent reportedly altered personal data and accessed invoices; the AEPD said this did not indicate compromise of an AI provider.
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