Joomla: hardening your joomla using build-in text filter

Requirement:

  • Joomla 3.8 or later.

Never trust any input event from user. You need to sanitize any input to your Joomla system. Here the easy steps:

  • Go to "System" -> "Global Configuration", open "Text Filter"
  • Change all "Filter Type" to "Default Blacklist"
  • Done

Tested on Joomla 3.8.10.

Thanks to mrkronkz or mr kronkz or woyname<at>gmail.com or what ever to log your attack into my system :D.