Top 10 Computer Viruses

Feb 23, 2011

We take a (not-so) affectionate look back at the world's most memorable computer viruses, from Creeper to Conficker.

Copyright © PC & Tech Authority. All rights reserved.

  <b>Klez:</b>
<br><br>
The late 90s-early 2000s were not only the golden age of the internet, they also seemed to be the golden age for malware. Over that time period, few viruses were able to match the reign of Klez.

Like many other viruses of its time, Klez spread through email. Users were duped into opening infected files and, once the malware was installed, the victim's address book was opened and copies of the attack were sent to contacts. 
<br><br>
Klez, however, took this a step further. Not only did the virus send itself to people in your address book, it also pretended to be from other people. Later, the worm wreaked further havoc by pretending to be its own removal tool. 

Klez is a cunning little devil, and variants are still doing the rounds today.
 
 

Klez:

The late 90s-early 2000s were not only the golden age of the internet, they also seemed to be the golden age for malware. Over that time period, few viruses were able to match the reign of Klez. Like many other viruses of its time, Klez spread through email. Users were duped into opening infected files and, once the malware was installed, the victim's address book was opened and copies of the attack were sent to contacts.

Klez, however, took this a step further. Not only did the virus send itself to people in your address book, it also pretended to be from other people. Later, the worm wreaked further havoc by pretending to be its own removal tool. Klez is a cunning little devil, and variants are still doing the rounds today.

Image 5 of 11
 
comments powered by Disqus

Latest Photo Galleries

Latest News

How Queensland Urban Utilities dealt with its workload explosion
Oct 24, 2014
Cloud-based portal eases the strain.
iiNet founder Michael Malone backs new infosec company
Oct 24, 2014
Wants to bring Defence Force discipline to the private sector.
NSW Privacy Commissioner 'disappointed' by slow rate of progress
Oct 24, 2014
Resourcing fails to grow despite agency pleading.
Meet FABACUS, Westpac's first computer
Oct 24, 2014
GE225 operators celebrate gold anniversary.
Adelaide City Council on the hunt for a new CIO
Oct 24, 2014
Veteran IT chief Luu Nguyen retires.