What does SSL stand for, and why is it important?

SSL stands for Secure Sockets Layer, and it plays a crucial role in internet security by encrypting data that is transferred between clients and servers. This encryption ensures that any sensitive information such as passwords, credit card numbers, and personal data is protected from eavesdroppers and hackers during transmission. By creating a secure channel over an otherwise insecure network, SSL prevents unauthorized access and maintains the confidentiality and integrity of the data being exchanged.

This layer of security is particularly important for online transactions and communications, making SSL a fundamental technology for e-commerce and any service requiring secure data transmission over the internet. Understanding SSL's function helps illustrate why web browsers and servers use it extensively to establish a secure connection, indicated by "https" in the URL and the presence of a padlock icon.