SSL stands for Secure Sockets Layer. It is a cryptographic protocol that provides security and data integrity for communications over networks such as the Internet. Data sent via an SSL connection is protected by encryption, a mechanism that prevents eavesdropping and tampering with any transmitted data. Having an SSL on your site makes businesses and consumers eager to submit their confidential details over a web site e.g. credit card or other payment details for e-commerce web sites or other personal details shared for sign in to regular online services.