Mark Russinovich works at Microsoft as a Technical Fellow, Microsoft’s senior-most technical position. He joined the company when Microsoft acquired Winternals software, which he co-founded in 1996. He is also author of the popular Sysinternals tools. He is co-author of the Windows Internals book series, a contributing editor for TechNet Magazine, and a senior contributing editor for Windows IT Pro Magazine. He lives in Washington State. Zero Day is also published by Corsair.