VoIP Security and Hacking

VoIP Security and Hacking is a specialized domain of cybersecurity focused on protecting Voice over Internet Protocol communication systems from malicious attacks and unauthorized access. This field addresses a range of threats that exploit vulnerabilities in VoIP protocols like SIP and RTP, including eavesdropping on calls, toll fraud (making unauthorized calls billed to the victim), Denial-of-Service (DoS) attacks to disrupt communication, and vishing (voice phishing) via caller ID spoofing. To counter these risks, security professionals implement a layered defense strategy that includes encrypting call signaling and media streams using TLS and SRTP, deploying VoIP-aware firewalls, enforcing strong authentication, and segmenting network traffic to ensure the confidentiality, integrity, and availability of voice communications.

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2. VoIP Architecture and Components