Businesses are eyeing a transition to Microsoft Windows 7, and with a wealth of security features that are part of it, it's worth figuring out the good and bad about each of them, says Gartner analyst Neil MacDonald, who notes in some cases, third-party security products might be the better fit.The six greatest threats to US cybersecurityThe AppLocker feature in Windows 7 offers an application-control capability that lets the IT manager set up a list of applications allowed to run, said MacDonald in his presentation at the Gartner Summit & Risk Management Summit 2010 last week. Often called whitelisting, this type of security control offers a possible lock-down technique, but the downside is that applications used within organizations by employees tend to grow, "and the trick is managing the whitelist over time.""Care and feeding of the whitelist becomes cumbersome over time," MacDonald said, noting that there are several vendors in the application-control market, including Bit9, CoreTrace and McAfee (which acquired SolidCore) .