The plugin Htaccess allows controlling access to your website using the directives Allow and Deny.
WordPress Website Security Protection: Firewall Security, Login Security, Database Security... Effective, Reliable, Easy to use...
Changes visibility of a blog after it has had no activity for a specified amount of time.
Automatically logs out inactive users.
This plugin adds a button to the widget's admin page that will delete all inactive widgets.
This plugin helps to minimize some security concerns. It will automatically sign an inactive user out after a specified time period of inactivity.