Episode 23:AI Voice Agent Security: Voice AI Under Siege: SIP Spoofing, Cost Drain, and How to Fight Back

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In this episode of Traffic Light Protocol, we kick off our AI series with a hard look at how voice AI agents are being targeted; and how fast small businesses and startups can rack up serious bills overnight.

Guest Myles Agnew returns to unpack how old-school telecom tricks are being repurposed in the age of SIP/VoIP and AI: caller ID spoofing, open SIP trunks, and automated call loops that tie up your agents and quietly burn cash. We break down how easy it is to spin up a low-cost PABX, why authentication is weak in SIP land, and what practical controls you can turn on today to reduce fraud and noise.

What we cover:

• How SIP (Session Initiation Protocol) is abused to hit voice AI agents
• Why caller ID “verification” often isn’t verification at all
• The $5–$10/month attacker vs. your $/minute billing problem
• Channels/lines, trunk limits, and how attackers amplify cost
• Geo-fencing, call gating, and rate limits that actually help
• “Stop loss” ideas for web and voice agents
• How provider security maturity (and defaults) drives your risk
• Where laws and policies are heading (AU, US) and what to watch

If you’re building or buying voice AI, this is a must-listen before you scale.

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