SSL
Overview
TLS/SSL/HTTPS - These are the methods and protocols used to make websites and services safe to travel to over the Internet. They rely on Certificates. You may hear SSL Certs or Certificates as shorthand for this subject. Without these in place, all of the information you put in an online site or program could be intercepted in an easy to read format by hackers. You should never use a site that only uses HTTP (no security certificate) for anything that requires a password or personal data. Modern browsers do a good job of warning you of the danger.