Anti-worm has multiple meanings within the field of computer security . It can be a piece of software designed to protect against computer worms , combining the features of anti-virus software and a personal firewall . It can also mean a worm designed to do something that its author feels is helpful. Concept: The concept of "Anti-Worms" is a proactive method of dealing with virus and computer worm outbreaks. Just like malicious computer worms, anti-worms reach computers by scanning IP ranges and placing a copy of themselves on vulnerable hosts.

In today's competitive world, where Technology success rate is increasing Day-By-Day rapidly in this cutting edge Technology based environment, where everything is integrated into small chips and the storage capacity is increasing. In the same way, there was a time when 1GB to 2GB HDD was sufficient to operate a PC and now those bulky HDD are converted into small USB Pen drive which is available upto 4GB and external USB HDD which might be upto 120GB. However, the only demerit which we all are facing is the transferring of Viruses, Worms , Trojans, and Spywares etc. It is actually a challenging question for all of us that how should we stop all these viruses and save our Computers from these External USB Drives?