What’s going on with the web? The PHP issue and sites going offline

A significant number of websites have gone offline, and that’s not due to a service outage, but rather a deliberate decision by the site’s owners. The reason is because extremely dangerous security vulnerabilities have been found in a protocol used by most websites – PHP. This issue is unrelated to the separate vulnerability discovered in web certificates … more…

Summary from the 9to5Mac feed. The full story lives on their site.