The security of a website is improved by SSL (Secure Sockets Layer), which offers two crucial features: Encryption and Authentication.
With encryption, no one else can read the data that users provide to your website. The web server and web browser exchange encrypted data when a user sees your site using an SSL connection (URLs that start with https://).
Visitors can trust that you are who you say you are if you have successfully authenticated yourself. Users can be sure they are viewing your site and not an impostor's when they connect to your website using an SSL certificate. While authentication helps you establish your identity to others, encryption helps secure data.
When users visit an SSL-enabled site, most web browsers display a lock icon (usually in the address bar).
