￼Dan Moren, Dan Miller i Serenity Caldwell:
SSL (Secure Sockets Layer) and Transport Layer Security are a pair of networking technologies that establish an encrypted link between your computer and servers. Though most often seen in your web browser (that’s what that little padlock icon signifies), SSL/TLS is also used in other places, such as connections with mail clients, calendar servers, and chat servers—basically, any time you want to securely exchange information over the Internet. Together, the technologies not only encrypt communications between clients and servers, but also ensure that the server you’re accessing is who it purports to be (preventing things like phishing and man-in-the-middle attacks).
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