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Wikipedia sues UK over Online Safety Act's 'categorization' rules

By Patricia Figueiredo ( May 8, 2025, 14:07 GMT | Insight) -- Wikimedia Foundation, a non-profit that hosts online encyclopedia service Wikipedia, today launched a legal challenge against the UK Online Safety Act, marking the first significant opposition to Ofcom’s efforts to implement the act’s categorization rules. Wikimedia argues that neither online safety regulator Ofcom nor the UK government provided sufficient clarity on these rules, which could subject Wikipedia to the toughest duties. Ofcom is currently gathering evidence to assess services against categorization thresholds, with a final list expected this summer.Wikimedia Foundation's recently announced legal challenge to the UK Online Safety Act represents the first blow to regulator Ofcom’s efforts to implement the act’s categorization rules. The organization hosting Wikipedia claimed neither Ofcom nor the UK government offered enough clarification on how the rules could affect the online encyclopedia service....

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