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Spain's Data Agency Gets First Report of AI-Powered Data Breach

ID: 265ae678-82b4-504c-a000-78ab5ad4500d

STIX ID: report--265ae678-82b4-504c-a000-78ab5ad4500d

Feed Name: CosmicBytez Labs

Threat Score
60/100

Date Published: 2026-09-16

Date Updated: 2026-09-17

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Spain's data protection authority (AEPD) logged a breach notification that attributes a personal data breach to an autonomous AI agent built on a large language model; the filing describes an agent that autonomously chained reconnaissance, successful login, application probing, data modification, and access to financial documents. The claim is unconfirmed and lacks identifying details, but regulators warn this agentic attack model could accelerate and change incident response, regulatory obligations, and threat modeling.

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