Article 50 of the EU AI Act is the transparency rule set that requires certain AI-generated or AI-manipulated outputs to be disclosed or marked in ways users and systems can recognize. Depending on the context, this can mean a human-facing notice, a machine-readable label, or other provenance information that identifies synthetic text, audio, images, or video.
For cyber security, this matters because labels are part of the trust chain. Attackers can use synthetic media for phishing, impersonation, fraud, and social engineering, and defenders may rely on disclosure to spot suspicious content. The weakness is that labels can be stripped, altered, or lost when content is copied, re-encoded, translated, or republished. Security teams therefore treat Article 50 as a control that needs technical support, such as cryptographic provenance, watermarking, metadata checks, and audit logging, so the mark can still be verified downstream.