Date Added: May 2009
Voice over IP (VoIP) and Internet Multimedia Subsystem (IMS) technologies are rapidly being adopted by consumers, enterprises, governments and militaries. These technologies offer higher flexibility and more features than traditional telephony (PSTN) infrastructures, as well as the potential for lower cost through equipment consolidation and, for the consumer market, new business models. However, VoIP/IMS systems also represent a higher complexity in terms of architecture, protocols and implementation, with a corresponding increase in the potential for misuse. Here, the authors begin to examine the current state of affairs on VoIP/IMS security through a survey of known/disclosed security vulnerabilities in bug-tracking databases.