I do not have any free antivirus but going to check my computer certificates now.
For those who want to do the same.
You can use Certificate Manager to see details about your certificates, modify them, delete them, or request new ones.
Open Certificate Manager by clicking the Start button , typing certmgr.msc into the Search box, and then pressing ENTER. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
This is a good thing to do. Learning about certificates and "the web of trust" is very important.
Most people don't even think about who gets to decide if a site is "trusted" or not.
This is a very interesting article and something I think everyone on the internet should read:
http://blog.cryptographyengineering.com/2012/02/how-to-fix-internet.htmlConvergence (which is mentioned in the article) is a very interesting idea.
http://www.convergence.io/I actually saw Moxy Marlinspike give a talk about Convergence, and its definitely the type of thing we need to be thinking about if we want a secure internet.