It seems that Microsoft is going to attract Linux Security experts to join and to bring different perspective to Widnows security. Recently, Crispin Cowan, who is responsible for a number of very well respected Linux-based security technologies such as StackGuard, the Immunix Linux distro, SubDomain and AppArmor, joined the core Windows Security Team. Crispin will work on User Account Control (UAC) and integrity levels, an area he knows a great deal about. Microsoft expects he’ll bring a different perspective to the Windows team, based on his security knowledge, experience and skills. Crispin holds and Ph. D. degree from University of Western Ontario, Canada.
You can visit Crispin’s web page and see more about his work.