Normally if I'm going to blog about a book, given the genre of my blog, the book would most likely be non-fiction. However, in this case I'll definitely make an exception! Zero Day is a book written by Mark Russinovich, who if you didn't know already, was co-founder of Winternals - which produced the very widely used Sysinternals Suite. This suite of tools became pretty much a standard in any Window power-users' toolbox. So much so that Microsoft bought out the company in 2006. Mark now works at Microsoft in the Windows Azure product team.