Over the past year there has been a shift within the computer security world away from passive, reactive defense towards more aggressive, proactive countermeasures. Although such tactics are extremely controversial, many security professionals are reaching into the dark side of their tool box to identify, target, and suppress their adversaries. This book will provide a detailed analysis of the most timely and dangerous attack vectors targeted at operating systems, applications, and critical infrastructure and the cutting-edge counter-measures used to nullify the actions of an attacking, criminal hacker. *First book to demonstrate and explore controversial network strike back and countermeasure techniques. *Provides tightly guarded secrets to find out WHO is really attacking you over the internet. *Provides security professionals and forensic specialists with invaluable information for finding and prosecuting criminal hackers.