SSL - certificates
SSL stands for Secure Sockets Layer. This is a protocol once developed by Netscape for transmitting private data through the Internet. SSL uses a private key to encrypt data that's transferred over the SSL connection. Many websites use this protocol to gain confidential user information, such as credit card numbers.

You should consider a SSL Certificate if you:

1. Conduct online transactions through your website
2. Want to send and receive information of a personal nature through your website
3. Wish to gain trust from potential clients who communicate with you via your website.