Standard IT audits rarely cover voice
Without a dedicated assessment, these risks remain invisible until they cause a service disruption, a compliance gap or a financial loss.
Voice networks are exposed to risks that generic IT assessments often miss: SIP scanning, toll fraud, caller ID spoofing, SBC misconfiguration, weak TLS/SRTP coverage, degraded QoS under attack, carrier dependency, cloud telephony integrations and AI-enabled vishing or deepfake scenarios.
A Voice Security Assessment gives technical and executive teams a clear picture of where the organization stands, which risks matter most and what can be improved immediately.
When do you need a voice security assessment?
New provider evaluation
Validate a SIP Trunk, carrier, UCaaS or Contact Center platform before it reaches production.
SBC hardening
Confirm that current SBC configurations resist known attacks and follow best practices.
AI-enabled fraud exposure
Test exposure to spoofing, vishing, deepfake voice and automated fraud scenarios.
Regulatory readiness
Identify gaps against NIS2, DORA, GDPR, ENS, CRA or ISO 27001.
Planned periodic review
Update the voice security scorecard, review new CVEs and verify previous fixes.
Migration or transformation
Assess security posture before and after PBX-to-Teams, legacy-to-cloud or carrier consolidation.
Built on the Quobis Voice Security Framework
The assessment applies the Quobis Voice Security Framework in a tactical and bounded way. It uses NIST CSF 2.0 as a foundation and adapts it to real-time communications, where availability and QoS are part of the security posture.
The objective is to discover, validate, measure and recommend.
What does a voice security audit cover?
The scope is adapted to each client, but a typical audit focuses on four areas:
Infrastructure & configuration
Review the technical foundation of your voice environment — from SBC rules and encryption to architecture design and service resilience. The goal is to identify misconfigurations, exposure points and gaps in the controls that protect signaling, media and continuity.
Threats & fraud
Evaluate real-world exposure to voice-specific attack scenarios — including toll fraud, spoofing, vishing and AI-driven threats. This area combines risk analysis with controlled, targeted tests to understand how the environment would respond to likely abuse patterns.
Operations & visibility
Assess whether monitoring, logging and alerting capabilities provide enough visibility to detect anomalies, fraud indicators and service degradation in time. This category focuses on operational blind spots that can delay incident detection and response.
Compliance & governance
Map the current voice security posture against the regulatory and governance expectations that apply to the organization. The audit highlights priority gaps and helps translate technical findings into compliance, risk and management actions.
How the audit works
Scope & objectives
We agree on what to assess, the target environment and success criteria.
Evidence collection
We gather configurations, architecture diagrams, traffic profiles and operational context.
Analysis & testing
We review configurations and run controlled tests to identify vulnerabilities, misconfigurations and gaps.
Findings & prioritization
We map what we found, assess risk levels and prioritize by business impact.
Recommendations
We deliver quick wins, remediation paths and clear next steps.
Knowledge of the complete value chain.
Ready to assess your voice security posture?
Prevent and validate
Whether you are connecting a new provider, preparing for compliance, reviewing SBC hardening, planning a migration or validating exposure to voice fraud, Quobis can help you measure the real risk and prioritize the next actions.
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