People across the world are receiving strange messages on their computers. And it is all to do with Cloudflare , the web infrastructure company that powers much of the internet.

When people tried to talk to ChatGPT on Tuesday morning, for instance, they were not greeted by the usual overly friendly chatbot. Instead, they saw a short error message: “Please unblock challenges.cloudflare.com to proceed”.

:: Follow our latest coverage of the outage here.

Many of the world’s biggest websites – including, for instance, Donald Trump’s own Truth Social – included their own version of the message. But they gave little explanation of what unblocking “challenges.cloudflare.com” actually meant.

Users trying to visit betting website Bet365 saw an even more concerning message. “Attention neede

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