Antivirus software immediately discovered only 53 percent of malware samples, according to data gathered by Damballa in a six-month study that used McAfee Scan Engine v5.3.00 to scan more than 200,000 malware samples. Another 32 percent were found later on, and 15 percent were not detected at all. The average delay in detection and remediation was 54 days.
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Failsafe 3.0 includes a management console and will ship this month, with pricing starting at $100,000 for 10,000 nodes. It's aimed at organizations that prefer to keep their botnet-detection "locally in the cloud," Guerry says. "This is sensitive information to these clients," he says.

Couldn't say in their LAN or intranet? Had to work "cloud" in there.

Study: Antivirus Software Catches About Half Of Malware, Misses 15 Percent Altogether