Ofcom has fined 4chan a total of £520, 000 for failing to meet duties in the Online Safety Act, including a £450, 000 penalty for lacking age checks to stop children seeing pornography. The regulator set a compliance deadline of 2 April and attached daily penalties for missed measures. The platform’s lawyer answered the demand with an AI-generated cartoon of a hamster and a First Amendment defence.
What the fines cover and the compliance deadlines
Ofcom’s penalties total £520, 000 and break down into three charges: £450, 000 for failing to implement age assurance to prevent children accessing pornography, £50, 000 for not carrying out a suitable assessment of the risk of illegal material being published, and £20, 000 for failing to set out how users are protected from criminal content in its terms of service. The regulator has required 4chan to add an effective age check by 2 April or face a daily penalty of £500 for that failure; additional failings must also be addressed by 2 April or attract extra daily penalties of £200 and £100 respectively.
4chan response and legal stance
Preston Byrne, lawyer for 4chan, posted an AI-generated picture of a giant hamster in response to the fine and wrote that in the United States — described as the only country in which the platform operates — 4chan is breaking no law and its conduct is protected by the First Amendment. The platform has previously refused to pay fines issued by the regulator.
Official reaction, wider enforcement and context
Suzanne Cater, director of enforcement at Ofcom, said companies operating anywhere are not allowed to sell unsafe products to children and that age checks and risk assessments are cornerstones of the online safety laws. Ofcom has issued nearly £3 million in fines to tech firms worldwide under the same legal framework and has said it is considering next steps for firms that miss payment deadlines. In February 2025 Vice President JD Vance told an audience at the AI Summit in Paris that his administration was “growing tired” of foreign attempts to regulate US tech businesses; that remark was referenced in the broader debate surrounding cross-border enforcement.
What happens next
4chan faces a clear compliance window: implement age assurance, complete a suitable illegal-harms risk assessment, and update terms of service by 2 April or incur daily penalties. Ofcom has noted some companies have complied with fines and added age verification, while other fines remain within their payment timeframe and formal next steps are under consideration. Observers should watch whether 4chan pays, meets the technical requirements, or triggers enforcement escalation; the platform’s published AI hamster image and legal posture suggest a legal and public relations contest is underway.
As this story develops, 4chan’s response and Ofcom’s enforcement choices will determine whether the fines are enforced, negotiated, or litigated.
