"They have a chronic lack of girlfriends, are usually

socially inadequate and are drawn compulsively to write self-

replicating codes. It's a form of digital graffiti to them,"

Hruska added.

To create and spread cyber infections, virus writers explore

known bugs in existing software, or look for vulnerabilities

in new versions.

With more and more new OS (operating system) versions, there

will be more new forms of viruses, as every single software

or OS will carry new features, and new executables that can

be carriers of the infection.

Executables are files that launch applications in a

computer's operating system, and feature more prominently in

new platforms like Microsoft's Windows 2000 and Windows XP

than they did in the older DOS or Windows 3.1.

Virus writers also share information to create variants of

the same infection, such as the Klez worm, which has been

among the world's most prolific viruses.

The Klez, a mass-mailing worm that originated in November

2001, propagates via e-mail using a wide variety of messages

and destroys files on local and network drives.

But the news gets worse. Recent events have uncovered what

may be a new trend: spammers paying virus writers to create

worms that plant an open proxy, which the spammer then can

use to forward spam automatically. Many suspect this

occurred with the SoBig virus.

The Sobig worms began spreading in the early part of

2003. The unusual thing about them was they contained an

expiration date and were given a short life cycle to see how

features worked in the wild.

Having an expiration date also makes the virus more

dangerous, because most people would have been alerted to

the new worm within a few weeks and anti-virus definitions

would have been updated.

A variant of So big, Sobig-F was so efficient that just a few

infected machines could send thousands of messages. Sobig-F

created a denial-of-service effect on some networks, as e-

mail servers became clogged with copies of the worm.

According to Mikko Hypponen, manager of anti-virus research

for Finland-based F-Secure Corp, Sobig-F sent an estimated 300 million copies of itself.

Computer Economics, Inc. states, "Nearly 63,000 viruses have

rolled through the Internet, causing an estimated $65

billion in damage." However criminal prosecutions have been

few, penalties light and just a handful of people have gone

to prison for spreading the destructive bugs.

Why is so little being done? Antiquated laws and, for many

years, as crazy as it sounds, a "wink, wink" or even admiring attitude toward virus creators.

One person has been sent to prison in the United States and

just two in Britain, authorities say. But the low numbers

are "not reflective of how seriously we take these cases,

but more reflective of the fact that these are very hard

cases to prosecute," said Chris Painter, the deputy chief of computer crimes at the U.S. Department of Justice.

So what can you do to protect yourself against computer viruses?

Well, first and foremost, make sure you have proven anti-virus protection like Symantec's Norton Anti-Virus or McAfee's Virus Scan.

In addition, If you haven't already done so, I highly recommend installing Microsoft's Service Pack 2. SP2 tightens your PC's security with a new Windows Firewall, an improved Automatic Updates feature, and a pop-up ad blocker for Internet Explorer. Plus, the newly minted Security Center gives you one easy-to-use interface for keeping tabs on your PC's security apps.

"Male. Obsessed with computers. Lacking a girlfriend. Aged

14 to 34. Capable of creating chaos worldwide."

Now, I'm no psychiatrist, but to me, the above description sounds more like someone with a few "bats in the belfry!"

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