Sabre

The name of the plugin stands for Simple Anti Bot Registration Engine.

Installation:

Unpack and upload it to the /wp-content/plugins/ directory.
Activate the plugin through the 'Plugins' menu in WordPress.

Features:

• Inclusion of a captcha in the registration form
• Selection of the captcha's complexity
• Selection of the background color for the captcha image
• Inclusion of a math test in the registration form
• Selection of the math test's complexity
• Random or fixed choice of the test to run
• Unobtrusive tests to detect if registration is done by humans or not
• Registration blocked if JavaScript is unsupported by the browser
• Registration blocked if visitor's IP address is found on ban lists
• The blog administrator can validate the user registration
• The user can validate his registration by clicking on a link sent by mail
• Limited number of days for user confirmation. Without being confirmed within the period of time, the user account is disabled.
• Log on prohibited before user confirmation
• User is allowed to choose his password when registering on the blog
• User must agree with a warning text, disclaimer or general policy note when registering
• User must give an invitation code during registration
• Main statistics displayed on the blog's dashboard
• Custom logo on logon/registration screen

What is new in this release:

• This version is a security fix.

Requirements:

• WordPress 2.5 or higher