As long as I'm pointing at things...

I've been using their freebie version for years, and in the latest newsletter, they are having a sale. The Pro version of this has a zero-day behavioral detection system for malware detection, much like the now-defunct Threatfire, for instant protection against new bad stuff. This comes to us from Cologne, Germany, and
it works, so check it out. I'm now using their Pro version, and it is quite compatible with other security software like Avast, which I'm also using.