I love the Web Application Firewall and the .htaccess generator!
Stable and essential component for helping to protect the confidentiality, integrity, and availability of one's Joomla installation.
Some of the settings can be confusing. There needs to be more tool-tips and hover-text provided for every option that clearly explains what they're for.
A no-brainer. EVERY Joomla Admin should have this component. This should be part of Joomla core!