Viruses get spread by placing an infected floppy, CD, or downloading a file from the internet. It is executed when the program is started. The virus itself “is small piece of code embedded in a larger, legitimate program.” When the program is executed the virus looks around to see if it can find any other programs to attach itself to, and then infects that program as well. One of the biggest ways a virus is spread is by saving an infected file or program to a floppy. Then by giving that to someone else and then they run the program from the floppy, their computer has now become infected. There is a couple more ways for the virus to spread. They can be downloaded into the memory so that they can be run at all times, or “the ability to infect what they call a boot sector. The boot sector is the first part of the operating system that the computer loads up first.” When the boot sector gets

These three viruses that are going to be discussed next are the top three viruses of March 2003. The first one is W32/Klez-H. There are no aliases to this one. This is a Win32 worm virus. This virus is spread through email. “The worm searches for email addresses in the windows address book and also in files with the extensions TXT, HTM, HTML, WAB, ASP, DOC, RTF, XLS, JPG, CPP, C, PAS, MPG, MPEG, BAK, MP3, and PPF.” This one would be impossible to tell it is a virus unless a virus scan is done.

infected it is a high percentile that the virus will be executed.

What was found other than Norton Anti-virus and McAfee’s Anti-virus programs was a program called eTrust EZ Anti-virus. “It provides proven protection, detection and elimination of thousands of computer viruses, worms, and Trojan horse programs.” This program cost $24.95 for the first year and $12.95 for the annual renewal. It supports all the windows programs. From what has been found this program seems to only be available online. “eTrust Antivirus depends on organizations against the costly and damaging effects of virus outbreaks. Backed by Computer Associates International, Inc. (CA) eTrust Global Anti-virus Research Centers and certified by ICSA Labs for detection of 100% of “in-the-wild” viruses, eTrust Anti-virus is the choice for complete virus protection.”

The next one is W32/Sobig-A. The one alias is W32.Sobig.A@mm. This virus is a worm virus that uses a built in SMTP client and local windows network shares to spread. The worm searches for files with the extensions TXT, HTML, EM

Some topics in this essay:
, ICSA Labs, EZ Anti-virus, MP3 PPF”, WAB DBX, W32/GibeB@mm WORM_GIBEB, Emulatorexe People, McAfee’s Anti-virus, virus spread, alternate data, boot sector, computer viruses, Research Centers, Inc CA, alternate data stream, worm virus, worm searches, spread email, incremental scanning, program floppy, files extensions txt, virus spread email, scanning incremental scanning, using internet,