About Conficker
On October 23, 2008, Microsoft released a critical security update, MS08-067, to resolve a vulnerability in the Server service of Windows that, at the time of release, was facing targeted, limited attack. The vulnerability could allow an anonymous attacker to successfully take full control of a vulnerable system through a network-based attack, the sort of vectors typically associated with network "worms." Since the release of MS08-067, the Microsoft Malware Protection Center (MMPC) has identified the following variants of Win32/Conficker:
- Worm:Win32/Conficker.A: identified by the MMPC on November 21, 2008
- Worm:Win32/Conficker.B: identified by the MMPC on December 29, 2008
- Worm:Win32/Conficker.C: identified by the MMPC on February 20, 2009*
- Worm:Win32/Conficker.D: identified by the MMPC on March 4, 2009**
- Worm:Win32/Conficker.E: identified by the MMPC on April 8, 2009
| *Also known as Conficker B++ | |
| **Also known as Conficker.C and Downadup.C |
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