VoIP is a digital communication medium used to exchange voice and multimedia content over an Internet Protocol (IP). VoIP has traditionally been used to connect to the Private Branch Exchange (PBX), which is a private telephone network used within a company or organization. However, the term is now being used to refer to IP telephony. With the increasingly widespread usage of VoIP in personal and professional engagements, it has gained the attention of threat actors and security researchers.
In this section, we will discuss some of the common threat vectors that impact VoIP and the defense mechanisms that can be implemented to mitigate those threats.
VoIP threat landscape
VoIP is an amalgamation of different technologies that form the platform that's used to deliver voice interaction capabilities over the internet, including IM applications, VoIP phones, and other such services.
The following diagram shows the framework of a corporate...