What is SSL and why is it important?

WHAT IS TLS/SSL?

Transport Layer Security (TLS), and its now-deprecated[1] predecessor, Secure Sockets Layer (SSL), are cryptographic protocols designed to provide communications security over a computer network. Websites can use TLS to secure all communications between their servers and web browsers.

The TLS protocol aims primarily to provide privacy and data integrity between two or more communicating computer applications.[2]:3 When secured by TLS, connections between a client (e.g., a web browser) and a server (e.g., wikipedia.org) should have one or more of the following properties:

  • The connection is private (or secure) because symmetric cryptography is used to encrypt the data transmitted.
  • The identity of the communicating parties can be authenticated using public-key cryptography.
  • The connection is reliable because each message transmitted includes a message integrity check using a message authentication code to prevent undetected loss or alteration of the data during transmission. (Source: WikiPedia)

WHY IS TLS /SSL important?

TLS / SSL was important for one very specific reason

  • Security: Encrypting communication and securely storing information, which is incredibly beneficial for eCommerce stores or websites handling sensitive information, e.g. credit card information.
  • Better SEO: Google has announced that beginning in January 2017, they will flag sites that store passwords or credit card information without SSL as insecure, as part of a long-term plan to mark all sites without SSL as insecure.There are many ranking signals that Google examines to determine the ranking a web page. One of the officially declared ranking signals is HTTPS. Adding TLS / SSL is important to your website ranking now.
  • Website credibility: Green padlock in the browser address bar shown beside any address is deemed as a sign of reputation. Visitors are more likely to trust a website if it has SSL.



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