How the world's largest open source CMS combines open & security Drupal is a huge software project by any measure, with thousands of developers writing code for it and deploying websites and applications on it.
Drupal security checklist As Drupal comes ever more popular, it will inevitable become more visible and targeted by hackers.
Disallow deletion of user 1 or user 0 (Root user or anonymous user) This may be a trivial case where user 1 (uid 1) can actually be deleted.