Conficker Update-Added Protection
I thought I pass some more information about what Conficker does as the details of this worm are slowing being found. The first part is that conficker contacts at least 250 domains a day to get issues commands and so odds are infected websites are part of that contact and in some cashes new created ones as well. However, it would seem that algorithm has been cracked by F-Secure and Kaspersky and so they have a good idea which of those 250 domains will be contacted on top of that F-Secured has provided a list of domains for network admin to use to start blocking these sites from being contact.
So if those domains are not contacted then Conficker just because a dead worm with no where to go but to sit idling by and maybe wait for a new website to be added. Because of that this list will always get updates as new domains are either added each day or each week and so make sure to check this list weekly if your a network admin. It also seems OpenDNS is doing a similar move and so if you have an account with them already they you have at least once layer of protect, but if your not it is highly suggested, especially if your a small or medium business.
SOURCE
http://www.pcworld.com/article/159126/free_defense_against_the_conficker_worm.html
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