VOIP Today Magazine is happy to launch its most challenging Competition under the sponsorship of Nostarch company.
Test your knowledge and WIN a free copy of “ Hacking VoIP” book by Himanshu Dwivedi .We'll be happy to announce a winner every week.
Himanshu Dwivedi is author for Hacking VoIP and he is a leading security expert and researcher. He has published four books on Hacking Exposed.
Hacking VoIP will introduce you to every aspect of VoIP security, both in home and enterprise implementations.