Drupal vs Wordpress vs Joomla
Wordpress, Drupal, and Joomla together occupy the maximum market share in Content Management Systems (CMS) used to develop websites. These CMSs provide the building blocks for a large part of the internet and attract a horde of hackers. They are a prime target for malicious attacks mostly involving data theft, transaction fraud or SEO spamming.
For more details check- https://www.getastra.com/blog/cms/sec...
For CMS security- https://www.getastra.com/pricing/compare