Overview
Voice over IP (VoIP) systems — IP PBXs, SIP trunks, contact-centre platforms and unified communications — are often deployed and forgotten. Attackers target them for toll fraud, eavesdropping, caller-ID spoofing and as a route into the data network.
Our VoIP penetration tests assess SIP servers, PBX management interfaces, phones and softphones, voice VLAN segmentation, encryption of signalling and media, and the controls that prevent unauthorised international calling.
We test safely to avoid disrupting live call services, coordinating windows with your telecom team.
What's included
Our approach
- DiscoverMap voice infrastructure and endpoints.
- AssessReview configuration and exposure.
- AttackTest fraud, interception and access scenarios safely.
- SegmentationValidate separation of voice and data.
- ReportFindings with prioritised fixes.
What you receive
- VoIP asset inventory
- Toll fraud exposure findings
- Encryption and interception findings
- Segmentation results
- Remediation guidance and retest
Standards & frameworks
- PTES
- NIST SP 800-58
- MITRE ATT&CK
- CIS Controls
Frequently asked questions
What is VoIP penetration testing?
A security assessment of voice-over-IP systems, including call servers, PBXs, SIP trunks, phones and the networks they use.
Will testing interrupt our phone service?
We test in agreed windows and avoid denial-of-service techniques to protect live call services.
Do you test cloud phone systems?
Yes, within the provider's testing policy and your configuration scope.