Virus Prevalence - August 2003

Virus NamePrevalencePercentageInstances
W32/Sobig66.29% 44284
W32/Mimail18.74% 12516
W32/Opaserv5.54% 3704
W32/Bugbear2.3% 1536
W32/Klez1.61% 1073
W32/Nachi1.28% 857
W95/Dupator1.1% 737
W32/Yaha0.68% 454
W32/Lovsan0.51% 342
W32/Funlove0.37% 245
W32/Fizzer0.27% 181
W95/Spaces0.25% 170
VBS/Redlof0.17% 113
W32/SirCam0.1% 68
W32/Magistr0.09% 59
W32/Ganda0.09% 59
W32/Gibe0.08% 55
JS/Fortnight0.08% 54
W32/Kriz0.06% 42
W32/Hybris0.05% 34
W32/Holar0.04% 29
VBS/LoveLetter0.03% 18
W95/CIH0.03% 19
W32/Lovgate0.02% 13
W95/Lorez0.02% 15
W32/Nimda0.02% 14
W32/Lovelorn0.02% 14
XM/Laroux0.02% 14
W32/BadTrans0.01% 9
Netlog0.01% 4
Mumu0.01% 10
W32/Mylife0.01% 4
W32/Cabanas0.01% 4
W95/Whog0.01% 5
W32/BleBla0.01% 4
W32/FBound0.01% 4
W32/Goner0% 3
Bubbleboy0% 1
W32/Spybot0% 2
W32/Myparty0% 1
IEStart0% 1
WYX0% 2
Stoned0% 1
JS/Kak0% 1
W32/Lirva0% 1
W32/Valla0% 3
W32/QAZ0% 1
W32/Blueball0% 1
Cap0% 2
W95/Bumble0% 2
Linux/LION0% 1
W95/Ilmx0% 1
W32/Frethem0% 3
W32/Dumaru0% 1
W95/Kuang0% 1
W32/Sdbot0% 1
Divi0% 2
Tristate0% 2
W95/Bodgy0% 2
W32/Antinny0% 3

Background

The Virus Bulletin prevalence table is compiled monthly from virus reports received by Virus Bulletin; both directly, and from other companies who pass on their statistics.

Reports are included only if they are confirmed, and hence, in conjunction with the WildList, the prevalence table provides a useful indication of the relative prevalence of various virus found in the wild at the time.

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