What is this 'https' I see on some websites

You're familiar with the original http form in web addresses, otherwise known as URLs. 

When you are connected to a URL starting with http, there is a risk of information YOU send (for example when you fill in a form) being intercepted by a hacker.

With https, all communication between you and the site is encrypted and much, much harder to maliciously alter. This is particularly important when you are reading sensitive information from the site (such as your bank statement) or sending sensitive information to the site, such as your credit card.

Our site does not handle ANY such information and therefore there is no exposure to you but we went ahead anyway and upgraded to https.