I've recently been playing a free to play on-line game and had, until a few moments ago, been playing in windowed mode. On changing from windowed to full-screen mode, my firewall spat out this notification...
I certainly didn't perform an upgrade to the binary files concerned...
C:\Program Files\Microsoft Security Client\MpCmdRun.exe
C:\Program Files\Microsoft Security Client\MsMpEng.exe
Looking at the files' time-stamps, they don't appear to have changed since I last performed a Windows security update on 26/09/12.
Should I be concerned?
Thanks for any advice.