Compromised certificate checker
We're checking the ability to make valid HTTPS requests, using certificates you shouldn't trust. Look below, to see if any actions need to be taken, such as removing something from your operating system's keychain.
You should test in more than just Chrome
Due to recent changes in the way Chrome handles certificate common names, one or more of these important checks may give you a false negative (a false sense of security, when in fact you may have a problem).
Make sure to run this test in two or more browsers!
You need to revoke trust for one or more certificates!
Please follow instructions for OS X or Windows 8/10. You can also use Chrome, by going to
Settings > Advanced > Privacy and Security > Manage Certificates, at which point you'll have to find the appropriate cert(s) to un-trust (see below).