Protection against Antivirus 2009

You need to check all PCs to see if they have any of the below files corrupted:

c:\windows\system32\eventlog.dll << proper size for SP3 is 56,320 bytes
c:\windows\system32\netlogon.dll << proper size for SP3 is 407,040 bytes
c:\windows\system32\scecli.dll << proper size for SP3 is 181,248 bytes

Also check to make sure that the below file size is correct.
c:\windows\system32\drivers\beep.sys << proper size for SP3 is 4,224 bytes

If any PCs have the wrong size for these files then they are infected and need to be removed from the network (especially if file sharing is in use) until they have been fully cleaned. I assume you are part of IT Support of have IT Support. They will have to properly clean these PCs for you and this can be quite time consuming and you have to know what you are doing in as far as malware removal and special tools are concerned. You may find that it would be more expedient to just reinstall since there is not quick fix and each case can be some what different even though they will be similar.

There is no known real protection for actually blocking this. In most cases it is due to someone downloading/installing something they should not. Properly protected PCs will have a good antivirus, good antispyware protection, and a good 3rd party firewall (i.e, not the Window firewall) installed.

If you have purchased a site license for this software, you should be screaming at them right now. Why is it that a major security company like this does not block it to begin with, and why can they find and remove the malware that free programs can? What exactly is it that you are paying for?