Microsoft has just snared a U.S. patent for proactive virus protection, which is how security software helps secure your PC when it encounters shape-shifting malware not already in its antivirus definition file. What I want to know is, what does this mean for all the other vendors -- like McAfee, Symantec, Kaspersky, and Trend Micro -- that have been selling proactive protection software for years? Do they now have to pay Microsoft protection; I mean, royalties?
Here's the quick low-down on the new Microsoft patent. Issued on May 20, patent number 7,376,970 is entitled "System and method for proactive computer virus protection." The inventor is Adrian Marinescu, who was at one point (maybe he still is) a lead developer on the Windows kernel team, heavily involved in the heap manager. He previously worked on Windows NT's object manager, which is a key software traffic-cop managing the interaction among all the executive kernel subsystems. All this is by way of saying that Mr. Marinescu clearly knows his operating-system internals.
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