Definition
HTTPS is a secure version of the HTTP protocol used for transmitting data over the internet. It encrypts communication between a web browser and a web server, ensuring that sensitive information remains confidential and protected from unauthorized access. HTTPS achieves this security by using TLS Transport Layer Security, which establishes a secure channel for data exchange. This protocol is crucial for protecting user privacy, maintaining data integrity, and building trust between users and websites. For instance, when you see a padlock icon in your browser's address bar while shopping online, that indicates an HTTPS connection is in use. It is important to distinguish HTTPS from HTTP, which transmits data in plain text and is vulnerable to interception. Understanding HTTPS is fundamental for cybersecurity professionals and appears on certifications like Security+, CySA+, and CISSP.