I've been using this very simple technique to protect my PC from virus attacks for more than a year now. And it has been very effective and efficient for me.
My computer is equipped with Intel Celeron 1.6GHz processor, 256MB video card and 1GB RAM. And I am running a Windows XP SP2 operating system. If you will notice, my processor is really slow. That's why protecting my PC with a top of the line anti-virus is not a good idea. I can't run an application or game without lag and delay when the real time protection of my anti-virus is turned on. I've tried to use AVG, BitDefender and PC-cillin to protect my PC. They are all good in detecting and killing viruses. But they also eats up a lot of space in my computer's memory and they also run tons of processes. These stuffs make my computer very slow.
Because of the problems brought by anti-viruses to my PC, I tried to find a way to protect my PC without sacrificing its performance. Fortunately, I've found one!
With this trick, there is no need to install memory hog anti-viruses and my PC can still run applications smooth and fast. The trick is based on the concept "prevention is better than cure".
The main software that we need to use is the USB Disk Security. This software will automatically scan your USB drive once an USB storage device is plugged into it. It will detect .exe viruses and other viruses that uses an autorun.inf file to automatically execute itself and spread harm to your PC. USB Disk Security will also allow you to disable the autoplay or autorun function of your PC once it detects an USB storage device is plugged into your PC.
This trick using USB Disk Security is only good for those users whose primary source of virus attacks are from USB storage devices or flash drives. In my case, the only source of viruses that infests my PC is the USB port. I am a safety first internet surfer. I never visit malicious websites. I also refrain from downloading software cracks from the net which most of the time are viruses. So it leaves my USB port as the only way for viruses to enter my PC.
So here's what I do with USB Disk Security. First, I will plug the flash drive. Second, USB Disk Security will automatically scan the device. If it detects a virus, I will just click the "delete all" button and reinsert the USB storage device. Since the software will delete all autorun viruses, you can now easily double click your drive without the fear of accidentally executing a virus. But still be careful. The software will only delete autorun viruses. So it may leave non-self-starting viruses in your device. Just be observant. Do not click odd, weird or malicious files.
USB Disk Security really fits my need for a simple and effective virus protection. So if you have the same problem as mine with your PC, I advise you to try this very simple virus protection now! You can download USB Disk Security here.