AutoRepeater will only resend requests which are changed by a defined replacement. When AutoRepeater receives a request that matches the conditions set for a given tab, AutoRepeater will first apply every defined base replacement to the request, then will copy the request with the base replacements performed for each defined replacement and apply the given replacement to the request. Burp Suite is an intercepting HTTP Proxy, and it is the defacto tool for performing web application security testing. While Burp Suite is a very useful tool, using it to perform authorization testing is often a tedious effort involving a "change request and resend" loop, which can miss vulnerabilities and slow down testing. AutoRepeater, an open source Burp Suite extension, was developed to alleviate this effort. AutoRepeater automates and streamlines web application authorization testing, and provides security researchers with an easy-to-use tool for automatically duplicating, modifying, and resending requests within Burp Suite while quickly evaluating the differences in responses.