Please note that these pages include descriptions of only a fraction of all the malware F-Prot Antivirus detects. F-Prot Antivirus now detects a total of 1127783 worms, viruses and other malicious programs, with dozens of new threats added every week.
| Name of Virus | Date Discovered |
| W32/Zafi.A@mm | 20 Apr 2004 |
| W32/Zafi.B@mm | 11 Jun 2004 |
| W32/Zafi.C@mm | 27 Oct 2004 |
| W32/Zafi.D@mm | 14 Dec 2004 |
| W32/Zafi.G@mm | 26 Sep 2005 |
| W32/Zasran.A | 23 May 2006 |
| W32/Zasran.B | 24 May 2006 |
| W32/Zoher@mm | 25 Dec 2001 |
| W32/Zotob.A | 14 Aug 2005 |
| W32/Zotob.B | 15 Aug 2005 |
| W32/Zotob.C@mm | 15 Aug 2005 |
| W32/Zotob.D@mm | 21 Aug 2005 |
| W32/Zotob.E | 24 Aug 2005 |
| W32/Zotob.F | 16 Sep 2005 |
| W32/Zotob.G | 16 Sep 2005 |