What is the purpose of an SSL certificate?

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An SSL certificate serves multiple critical functions in securing communications over the internet, with one of its primary purposes being to secure and encrypt communications between a user's computer and a web server. When SSL (Secure Sockets Layer) is implemented, it creates a secure channel for data to be transmitted, ensuring that any information exchanged—like login credentials, payment information, and personal data—is encrypted. This protection shields the data from eavesdropping or tampering by malicious parties.

While the identity validation aspect is also an important feature of SSL certificates, it primarily acts to establish a secure connection first and foremost. Encrypting data in transit prevents unauthorized access during transmission, thereby maintaining the confidentiality and integrity of sensitive information shared over the internet. This is particularly vital when users are interacting with web applications or making transactions on e-commerce sites.