Safer Cookies

Ties the WP session cookie to your IP address so that it can’t be used to get access to you blog from another computer.

Author:Janis Elsts (profile at wordpress.org)
WordPress version required:2.5
WordPress version tested:2.9.2
Plugin version:1.2
Added to WordPress repository:27-07-2008
Last updated:07-12-2009
Warning! This plugin has not been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.
Rating, %:0
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Plugin URI:http://w-shadow.com/blog/2008/07/12/safer-coo...
Total downloads:3 452
Active installs:10+
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Normally when you login to your blog WordPress will create a session cookie that is used to authenticate you. If someone was to steal the cookie they would be able to use it to get full access to your blog without having to know your password. This plugin prevents that from happening - it makes the cookie specific to your IP address, so it won't be usable from a different computer.

Use this plugin if you have a static IP. If you have a dynamic IP address and it changes often you will get logged out frequently.

A bit more info can be obtained from the Safer Cookies homepage