Conficker, the popular malware that affects Windows operating system is back to being the most popular malware – affecting close to 43% of systems in August. Here are the top malware and their percent propagation:

1. Conficker/Win32.Worm.Downadup – 43%
2. Win32.Induc.A – 15%
3. Win32.Sality.OG – 14%
4. Worm.Autorun.VHG – 9%
5. Win32.Virtob.Gen – 5%
6. Packer.Malware.NSAnti.1 – 4%
7. Win32.Worm.AutoIT.AC – 3%
8. Win32.Sality.2.OE – 3%
9. GEN:TDSS.Patched.1 – 2%
10. Win32.Worm.Downadup.Gen – 2%

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