UK Online Safety Act: Ofcom Publishes Illegal Content Enforcement Guidance

Ofcom released final guidance on illegal content duties under the Online Safety Act, requiring platforms to prevent users from encountering child sexual exploitation and abuse material, implement proactive detection technologies, and maintain systems to identify and remove illegal content swiftly. The regulator specified that the largest services must deploy hash-matching and artificial intelligence classifiers to detect known and novel CSAM, with compliance assessments beginning in early 2025 and non-compliance penalties reaching up to ten percent of global annual revenue.

Statutory obligations to detect and remove child sexual abuse material create demand for systems that distinguish genuine threat from lawful communication at scale. As a Meta Business Partner, Guardii supplies the detection layer the regulation anticipates: AI classifiers trained to recognise CSAM including AI-generated and deepfake imagery, grooming language patterns and sextortion tactics within direct messages, surfacing high-confidence matches to platform trust-and-safety teams for rapid removal and law-enforcement referral while filtering out benign content, and operating across Instagram, Snapchat, Discord and Roblox to meet the cross-platform scope of the Act's user-safety mandate.