A free scan of your SSL-protected website for the vulnerability known as Heartbleed. This is one of the most serious bugs discovered in recent years because of its serious nature and widespread occurrence. It has received enormous media attention in April 2014. This is the coverage by ZDNet and a more to the point article on CNN Money.
If your site is protected with SSL/TLS and you’re not sure that you’ve patched this, it’s important to run this scan. Your site might very well be exposing user names, passwords and credit card numbers of your clients, or even the SSL private key of your server.