PCTools company released a new version of their award winning behavior detection system ThreatFire. I've been tracking the progress of this program since it's early days. Back then it was called Cyberhawk and it was really effective without need for signature updates. This hasn't changed. In fact, it has only improved. And best of all, it's free for personal usage (for home usage). The biggest new feature in version 4.6 is full 64bit support. Yes, this means that you can install ThreatFire on any 32bit or 64bit Windows operating system. They've also added full Windows 7 support. ThreatFire is excellent additional layer of protection along your existing antivirus. Pair ThreatFire with avast! or AVIRA and you'll have outstanding protection for free. But you can use ThreatFire with any other security program. Behavior detection has several advantages. It's almost immune to all the cryptors and packer, doesn't require much updates for evolved malware and provides excellent protection against very new malware. You can grab it here: www.threatfire.com. Take it for a spin. It's free and i think most of you guys will like it.