HTTPS Everywhere is a browser extension that automatically switches websites from the insecure HTTP protocol to the secure HTTPS protocol. This helps protect users' privacy and security by encrypting their data, making it harder for third parties to intercept or tamper with information exchanged between the user and the website. Developed by the Electronic Frontier Foundation (EFF) and the Tor Project, HTTPS Everywhere is designed to enhance online safety. It works by redirecting users to the secure version of a site whenever possible, ensuring a safer browsing experience across the internet.