Drupal uses an easy-to-use web interface that allows you to manage content and user permissions. It is easy to create accounts and give permissions to create, view, update and publish content.
Drupal is one of the most well-structured and powerful open source Content Management Systems developed on PHP scripting language and MySQL backend database. Drupal has powerful built-in social networking capabilities, along with excellent news / content management and is extensively used to build scalable websites, portals, blogs, etc.
Drupal can manage any number of requests and can store and process any amount of information at the same time. Drupal being used by many high profile websites is subjected to regular security testing by Drupal community as well as by security experts all over the world.
Drupal being a multi-user system allows your visitors, log in as authenticated users or browse the site as anonymous users. You have the freedom to manage their access levels and assign roles for multiple permission level. Drupal websites are protected from all common security threats those defined by the Open Web Application Security Project.