Yes. We use a secure SSL connection for the site. You can verify this by clicking on the padlock symbol in the address bar in the secure area of the website.
Here is Microsoft's description:
How to know whether to trust a website.
If you see a lock button next to a website's address in the address bar it means:
- What you send and receive from the website is encrypted, which makes it difficult for anyone else to get to this info.
- The website is verified, which means the company running the site has a certificate proving they own it. Click the lock button to see who owns the site and who verified it.