9 hours ago · Global
Websites taken down worldwide as critical cyber-security update issued
What's happening
SignalsMonitor is following this as a markets story. BBC Business is the outlet attached so far. The reports are tied to Global. The first report grouped here was at 21 Oct 2026, 15:11 UTC. 2 material updates are listed in the timeline. The headline in use is “Websites taken down worldwide as critical cyber-security update issued”. This note is SignalsMonitor's own briefing, not the publisher's article.
What we know
The vulnerabilities with PHP, a programming language widely used across the internet, have been described as the most significant ever found by AI.
Story timeline
Reports grouped into this story, earliest first. Exact repeats from the same outlet are collapsed.
- First reported by BBC News Europe
Websites taken down across Europe as critical cyber-security update issued
- Picked up by BBC News Europe
Websites taken down worldwide as critical cyber-security update issued
Reported by 1 outlet
- BBC