"HTTPS" indicates that a website is using the Hypertext Transfer Protocol Secure, which ensures secure communication between the user's browser and the web server. This protocol employs encryption to protect data exchanged, such as login credentials and personal information, from eavesdropping or tampering. Websites utilizing HTTPS are considered more secure and trustworthy, improving user confidence and search engine rankings. Browsers often display a padlock icon to signify a website's secure connection.