Reports are coming in from eastern Europe that the infamous Klez virus may be down, but it's definitely not out as so-called 'Klez cocktails' are giving other viruses a new lease of life.
Multiple combinations of Klez and other older viruses have been reported as producing very dangerous combinations.
Klez essentially offers other viruses a piggy back. In recent cases the Elkern virus has been the prime passenger, but other more dangerous viruses now seem to be hitching a lift.
One of the most hazardous mixtures combines Klez with a newer version of the old CIH virus. P>Costin Ionescu, a researcher at antivirus firm BitDefender, said: "Older and even forgotten viruses like CIH or MTX now have a modern means of transportation.
"The mix is very strong and could pass through an ordinary virus checker without being detected as what it really is: a very destructive transformation of a virus."
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