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Cookie-lib.pl is a perl library, written in the spirit of cgi-lib.pl to help developers use cookies easily and effectively in web applications.

This is a demonstration script of the 'triple dot cookie' vulnerability in Microsoft Internet Explorer and Netscape. Triple dot cookies can be used to completely by-pass the domain restrictions for cookies in those browsers.

A cookie is simply a small (up to 20 times 4k per domain) bit of info which servers can store in a browser's client. This script shows an example of how to set and retrieve a cookie.