So you want to know if your computer and network are secure. To test how well the security is set up on your computer check out this tool from Microsoft (yep, I said Microsoft) Microsoft Baseline Security Analyzer. Or, for your corportate types check into Symantec DeepSight Analyzer. If you are concerned about the security of the computers on your network, go to Shields Up! at Gibson Research Corp. The best part about the Gibson Research site is that there are lots of explanations in something pretty close to plain english. I have said it before and I will say it again, "If you are connected to other computers or to the internet, then you need to be implement computer security at some reasonable and appropriate level".