Secure Socket Layer (SSL) is a security protocol that was developed by Netscape. SSL is used to establish an encrypted link between your web server and a browser. All the data which pass through a web server and a browser will remain private and secure through SSL encrypted link. SSL allows protecting your confidential information like credit card information, debit card information, login credentials, security numbers and financial transaction over the web.
What is SSL Certificates?
Secure Socket Layer Certificates (SSL Certificates) is a digital certificate that authenticates the website identity and sends the encrypted information to the servers. When SSL Certificates installed on a web server, it shows the Green Padlock with HTTPS and allows secure connections from a web server to a web browser. In SSL Industry, Different Types of SSL Certificates but mainly three types: Domain Validated, Organization Validated and Extended Validation SSL Certificates.
The SSL certificate has two specific functions:
1. Authentication and Verification:
The SSL certificate has information about the authenticity of certain details regarding the identity of a person, business or website, which it will display to visitors on your website when they click on the browser's padlock symbol or trust mark. By considering, the criteria used by Certificate Authorities to determine if an SSL certificate should be issued is most stringent with an Extended Validation (EV) SSL certificate; making it the most trusted SSL certificate available.
2. Data Encryption:
The SSL certificate also enables encryption, which means that the sensitive information exchanged via the website cannot be intercepted and read by anyone other than the intended recipient. It's kind of like sealing a letter in an envelope before sending it through the mail.
When and why to have SSL Certificate?
If you are having websites selling products, handling financial transactions etc. at that time you need buy SSL Certificate.
If you have websites handling financial transactions via third-party online money transfer services like PayPal at that time for secured transactions you need SSL Certificate.
You need SSL if you have a login area of the site where login credentials and password are saved/stored.
If you are in any way storing or sending personal data like credit card data, bank accounts data etc, just as in POS terminals.
If you are looking your websites to rank well on search engine searches then you need SSL.
Let's remember that SSL certificates are issued only after proper authentication and hence it adds to the credibility of a company or organization.