SSL - Secure Sockets Layer - is a standard security technology for establishing an encrypted link between a web server and a browser.
An encrypted SSL connection requires that all data passed between the browser and the website server is encrypted by the sender, and decrypted by the receiver. SSL can prevent unauthorized parties from gaining access to sensitive, confidential, or personal information.
SSL is the industry standard and is used by millions of websites in the protection of their online transactions with their customers.