AI tools found serious security flaws in PHP, the language behind roughly 70% of websites and many platforms such as WordPress (about 43% of sites). A fix was released on Wednesday and the PHP Foundation says anyone running PHP must update now. Sites taken offline are not necessarily hacked. If your online shop, booking page or site runs on PHP or WordPress, check with your web provider or developer this week. Also check that any third-party plugins or services you use are patched, since they can leave you exposed even after your own site is fixed.