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

TLP - The Digital Forensics Podcast

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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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