Security in Drupal
With the best track record in terms of being secure, Drupal is definitely what you need in today's world. With its organized process for verifying, investigating and publishing the possible security issues, you wouldn't have to worry about the security of your site or web application anymore.
A team dedicated to constantly work with the community, takes care of all the security issues by coming up with optimal solutions or suggestions. With most of the Government sites using Drupal as their CMS framework, it is kind of obvious that Drupal is the best when it comes to security.