SSL stands for "Secure Sockets Layer" and is a protocol for encrypting data transmissions over the internet. It is a security protocol designed to ensure the confidentiality and integrity of data exchanged between a web browser and a web server. SSL was later replaced by the improved TLS (Transport Layer Security), although the terms are often used interchangeably.
The primary goal of SSL/TLS is to protect sensitive information exchanged between a user and a website from unauthorized access. This involves encrypting the data during transmission to ensure it cannot be intercepted or manipulated by third parties.
SSL/TLS is used in various areas of the internet, particularly in secure online transactions such as online banking, shopping, and submitting confidential information through web forms. When a website uses SSL/TLS, it is often indicated by "https://" in the URL and a padlock symbol in the browser, signaling that the connection is secure.