1 hour ago · Global
Flaw in PHP computer language leads to shutdown of websites around world
What's happening
SignalsMonitor is following this as a markets story. The Guardian UK is the outlet attached so far. The reports are tied to Global. The first report grouped here was at 21 Oct 2026, 18:20 UTC. The headline in use is “Flaw in PHP computer language leads to shutdown of websites around world”. This note is SignalsMonitor's own briefing, not the publisher's article.
What we know
Precautionary takedowns come as experts say bad actors could exploit vulnerability in language used by 70% of sites Websites around the globe have gone dark after a serious vulnerability was found in a computer language used to build much of the world wide web.
Story timeline
Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.
- First reported by The Guardian Business
Flaw in PHP computer language leads to shutdown of websites around world
Reported by 1 outlet
- The Guardian