Modern hosted VoIP systems are highly secure when properly configured, using multiple layers of protection to safeguard your business communications.
Security measures in hosted VoIP:
- Encryption – calls are encrypted using TLS (signalling) and SRTP (media), preventing eavesdropping
- Firewall protection – enterprise-grade session border controllers (SBCs) protect against unauthorised access
- Authentication – strong passwords and two-factor authentication for user accounts and admin portals
- Fraud detection – automatic monitoring for unusual call patterns (e.g. sudden spikes in international calls)
- Geo-blocking – restrict calls to specific countries to prevent toll fraud
- Regular updates – your provider applies security patches automatically
Common VoIP security threats and how to prevent them:
- Toll fraud – hackers making expensive international calls on your account. Prevention: geo-blocking, call spend limits, strong passwords
- Eavesdropping – intercepting call audio. Prevention: TLS/SRTP encryption
- Denial of service – flooding your system to disrupt calls. Prevention: SBC protection, DDoS mitigation
- Phishing – social engineering to obtain login credentials. Prevention: staff training, two-factor authentication
Connection Technologies partners with providers that maintain ISO 27001 certification and comply with UK data protection regulations. Discuss security requirements with our team.