Phishing Site Detector is a free Chrome add-on developed by threatbook. This add-on allows users to configure monitoring for multiple websites and provides a pop-up warning if a user visits a website with a URL similar to the ones being monitored. By doing so, it helps users avoid potential phishing websites.

With Phishing Site Detector, users can easily set up their list of target websites to monitor. Whenever they visit a website that has a URL similar to the ones on their list, a pop-up warning is displayed, alerting the user about the possibility of it being a phishing website. This feature acts as an extra layer of security, helping users to stay safe while browsing the internet.

The add-on is easy to install and use, making it accessible for users of all levels of technical expertise. By providing timely warnings about potential phishing websites, Phishing Site Detector helps users make informed decisions and protect their personal information from falling into the wrong hands.