Asterisk hacking

Asterisk hacking shows readers about a hacking technique they may not be aware of. It teaches the secrets the bad guys already know about stealing personal information through the most common, seemingly innocuous, highway into computer networks: the phone system. This book shows readers what they can do to protect themselves, their families, their clients, and their network from this invisible threat. Power tips show how to make the most out of the phone system and turn it into a samurai sword - for defense or attack!