This book is a struggling collection of mistaken, useless, and potentially dangerous misinformation. The author has clearly not done his homework, and is not very knowledgeable about viruses.Apart from the many errors in the book, the innacurate descriptions, and irrelevant information, the author also includes bad recommendations on how to protect yourself from viruses, to wit: backing up your registry will NOT protect you from viruses.This book is no more than a collection of virus-related buzzwords.You will not learny anything from this book. In fact, much of the information presented in it is simply WRONG. I give it a swift thumbs down.