Password Reuse Detector is a simple Chrome extension that aims to protect users against password reuse and phishing attacks. This extension is designed to detect if you are using the same password for different domains and provides a warning page to alert you.

The way the extension works is by allowing you to set your corporate domain, where you typically login with your personal work account, and the corresponding password. If you try to use this corporate password for a different domain, the extension will detect the event and display a warning page. This feature helps users avoid the bad practice of password reuse and provides an additional layer of protection against potential phishing attacks.

It is important to note that the extension does not block any requests, so even if the warning page is triggered, there is a possibility that your password may have already been sent. Therefore, it is advisable to change your password whenever the extension triggers a warning page.

Additionally, it is necessary to update the password in the extension's settings whenever you change your password, in order to ensure the extension functions properly.