The internationally bestselling Hacking Exposed series now covers VoIP New in the tried-and-true. Hacking Exposed series is this comprehensive guide to security for Voice over IP....

Sidestep VoIP Catastrophe the Foolproof Hacking Exposed Way \"This book illuminates how remote users can probe, sniff, and modify your phones, phone switches, and networks that offer VoIP services. Most importantly, the authors offer solutions to mitigate the risk of deploying VoIP technologies....