Then put up against AVTest.org's huge cache of spyware, Trojans, and other malware, McAfee VirusScan Plus 2010 successfully identified an impressive 99.9 percent of samples, which earned it a second place rank in that category behind G-Data. Then again, most of the programs we tested handled basic signature detection well.
However, the apps we tested differed greatly in their ability to proactively protect against new malware that didn't yet have a full signature. Here, McAfee VirusScan Plus 2010 disappointed. In heuristic tests that use two week old signature files and newer malware, the program detected only 56.8 percent of AVTest.org's samples. Six other programs did a better job.
McAfee VirusScan Plus 2010 mitigates that lacklustre heuristic detection with its ability to check unknown files against online servers, which means that the latest available signatures will always be used. And the company proved quick in providing those signatures, usually within two hours of any given outbreak. Only Symantec was as nimble in its outbreak response.
But online crooks devote a great deal of effort to evading signature detection, and McAfee VirusScan Plus 2010 lacks any ability to identify malware based solely on behavior. Behavioural analysis provides a strong extra layer of proactive protection. VirusScan Plus, however, wasn't able to block any malware in behavioral tests.
McAfee VirusScan Plus 2010 also fared poorly in disinfection tests. Every other app we evaluated was able to detect and disable all of the test malware infections, and while McAfee disabled what it found, it failed to detect one of the 10.
The bad news continued with scan speed. The app's data throughput for automatic scans that occur when you save or copy a file, for instance, was a pokey 7.06MB per second. Only Trend Micro Antivirus + Antispyware was slower. And McAfee VirusScan Plus 2010 made the most mistakes when it came to putting up false alerts about harmless files. Its 15 incorrect results was more than twice as many as the next worst showing (Kaspersky had 6).
McAfee does offer some nice extras with McAfee VirusScan Plus 2010. For one thing, subscribers get all future program updates for free, with no need to pay extra for new software versions. Also, the company doesn't offer any antivirus programs without a firewall, so you'll get one with VirusScan Plus (we didn't test the firewall for this roundup, however).
VirusScan Plus is also relatively easy to use, and its warning popups display plenty of information when it finds a threat. But some good features and a decent user interface can't outweigh a poor job at many critical protection tasks.