Aaron Margosis is a Windows nerd, focusing a lot on security, running with least privilege, and the application compatibility impacts of doing so. He is co-author with Mark Russinovich of the Sysinternals Administrators Reference (MS Press, 2011). He has published a number of useful tools over the years, including MakeMeAdmin, LUA Buglight, IE Zone Analyzer, and the Local Group Policy utilities on the Microsoft FDCC blog. Aaron joined Microsoft Services in 1999, where he works with US government and other security-conscious customers.