The other thread on the new IB security device has me concerned at my computer being vulnerable to trojans and other attacks, whereby someone could control my TWS. What I would like is some ideas on how I can lock down my computer to make it as secure as possible. At the moment I do general web browsing/email and trading on the one PC. I am planning to do a fresh install of Win XP on another computer and install only the TWS and Sierra Chart on it. I presume it would be safer to have a dedicated trading machine. Currently I am running Windows Defender, AVG free edition and Spybot. Should I put these on my new trading only PC as well or are there better programs I can use? Also, is it possible to lock down my internet connection so it only communicates with TWS and nothing else? How do I go about this?