Moving to cloud voice brings huge benefits \xE2\x80\x94 and a new attack surface. Toll fraud and account takeover can run up enormous bills overnight if a VoIP system is left unsecured.
The Main Threats
- Toll fraud: attackers compromise an account and place expensive international or premium-rate calls, racking up thousands fast.
- Account takeover: weak passwords let attackers into admin portals.
- Eavesdropping: unencrypted calls can be intercepted on insecure networks.
- Phishing/vishing: social engineering targeting your staff or your customers.
How to Protect Your System
- Strong, unique passwords and MFA on all admin and user accounts.
- International call restrictions \xE2\x80\x94 disable or limit calling to countries you never call.
- Spending alerts and caps so unusual activity is caught fast.
- Encryption (SRTP/TLS) for calls and signaling.
- Regular access reviews \xE2\x80\x94 remove ex-employees promptly.
The biggest single win: turn off international/premium calling you don't need and set spending alerts. Most catastrophic toll-fraud bills come from unrestricted international dialing.
Security Is Part of the Setup
A good VoIP/UCaaS deployment bakes these protections in from day one rather than bolting them on after an incident. We help select platforms and configure them securely. See UCaaS and cybersecurity.
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