Privacy Badger is a browser extension developed by the Electronic Frontier Foundation (EFF) that helps users protect their online privacy. It automatically blocks trackers that collect data about your browsing habits without your consent. By learning from your browsing behavior, it adapts to prevent unwanted tracking over time. The extension works with popular web browsers like Chrome, Firefox, and Opera. Once installed, it analyzes the trackers on websites you visit and blocks those that seem to follow you across the web. This helps enhance your privacy and makes your online experience more secure.