What is VoIP & WebRTC Penetration Testing?
Organisations rely on VoIP & WebRTC services for everyday communication. However, if these services are vulnerable to known or unknown exploits, cybercriminals can target them. Comprehensive VoIP and WebRTC assessments utilise tailored test cases that match specific infrastructure to identify misconfigurations or security vulnerabilities.
By simulating real-world attacks against Session Initiation Protocol (SIP) servers, media gateways, TURN/STUN servers, and web-based audio/video endpoints, security gaps can be pinpointed and remediated before malicious actors intercept communications or disrupt operations.
Key Vulnerabilities Identified
Assessments systematically probe real-time communication infrastructure to uncover protocol-specific and application-layer threats. Core focus areas include.
Eavesdropping and Unencrypted Media Streams
Identifying unencrypted Real-time Transport Protocol (RTP) traffic and DTLS/SRTP implementation flaws that allow attackers to intercept, record, or manipulate live audio and video streams.
Toll Fraud and Unauthorised Dialling
Uncovering weak authentication in SIP gateways or softphone extensions, allowing malicious actors to route expensive international calls through corporate PBX systems.
TURN - STUN Relay Abuse
Detecting misconfigured traversal servers that allow attackers to use internal TURN relays as proxies for scanning or attacking internal network assets.
Signalling Server Denial of Service
Testing the resilience of SIP servers, WebRTC signalling nodes, and WebSocket connections against packet fuzzing, buffer overflows, and high-volume flooding attacks.
Caller ID Spoofing and Voicemail Exploitation
Identifying flaws in call-management logic that enable identity spoofing, unauthorised access to voicemail, or manipulation of the IVR system.
A CREST-Accredited Methodology
Because every communication environment combines unique server configurations, network routes, and client applications, we tailor testing approaches to each one. Security testing combines automated protocol fuzzing with rigorous manual exploitation techniques, testing against both traditional VoIP architectures and modern browser-based WebRTC implementations.
As a CREST-accredited service provider, Cyber Security Specialists guarantees that highly skilled professionals with recognised technical certifications such as OSCP and CREST deliver the testing. All assessments follow industry-recognised frameworks, including CREST, OWASP, and PCI-DSS requirements.
Comprehensive Reporting and Remediation
After the assessment, we deliver a detailed, actionable report to internal technical teams. This documentation establishes whether call data or network assets can be compromised, classifies the risks to the overall cybersecurity posture, prioritises vulnerabilities to address, and provides clear technical recommendations to mitigate identified risks. Telecom, SecOps, and network engineering teams receive precise technical guidance to secure communication channels efficiently.
Secure Communication Infrastructure Today
Penetration testing helps organisations identify and address vulnerabilities before an attacker can exploit them, thereby reducing risk and securing voice and real-time communication systems.
To discuss your VoIP & WebRTC Penetration Testing requirements, please get in touch with a member of the team by emailing info@cybersecurityspecialists.co.uk or calling 0161 706 0244.
