How fast do AV companies respond to outbreaks?

Anti-virus researcher Andreas Marx of has concluded an annual round of testing to see how well the various anti-virus programs responded to recent outbreaks of viruses and worms. The results appear to show that while the major anti-virus products are still having trouble keeping up with the massive glut of new malware, most are starting to do a better job.

This is interesting:

Marx noted that corporations are extremely intolerant of false-positives, so Symantec, McAfee and other vendors widely used in corporate environments tend to have a more complex quality-assurance process to weed out false positives; this often results in the companies taking longer to get virus definitions in place. On the other hand, smaller anti-virus companies, he said, tend to have more problems with false positives.

Link here.

Alex Eckelberry