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Ai data security

Cloudflare's GLM-5.3 Returns Other Customers' Data in 155 Responses

26 October 2026

Cloudflare has disclosed that its hosted GLM-5.3 model returned fragments of other customers' requests in 155 responses between 27 August and 9 September 2026. Businesses that run AI tasks on hosted models should check how their vendor isolates customer data.

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