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Coffee With Developers • Mar 28, 2025

Fighting Fraud with an AI Grandma - Ben Hopkins and Morten Legarth from faith @ VCCP

Ben Hopkins , Morten Legarth

Ben Hopkins and Morten Legarth built an AI grandmother to trap scammers. Her elderly persona cleverly masks LLM latency. Discover how this safely harvests actionable threat intelligence.

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#1 about 4 min

Establishing an optimistic AI viewpoint for software agencies

Embracing generative tools responsibly acts as a creative accelerator instead of a threat to established teams.

#2 about 4 min

Building an AI persona to combat telecom scammers

Deploying an automated conversational agent creates a disruptive mechanism that wastes bad actors' time while driving brand awareness.

#3 about 3 min

Prototyping conversational models with small technical teams

Creating the prototype application required blending computer science workflows directly with narrative character profile building.

#4 about 5 min

Masking system latency through strategic character design

An elderly persona naturally turns slow programmatic response times and simulated communication disruptions into believable interaction traits.

#5 about 2 min

Addressing privacy considerations when targeting digital cybercriminals

Legal evaluations determined that preventing active criminal behavior justified training conversational models on unfiltered scamming data.

#6 about 3 min

Keeping language model prompt design lean for speed

Streamlining persona prompts prevents overcomplicated context parsing from introducing unwanted conversational delays at runtime.

#7 about 5 min

Creating believable synthetic voices for conversational AI

Cloning authentic dialogue from untrained voice talent overcomes the unnatural theatrical performance style typical of commercial audio platforms.

#8 about 5 min

Testing the conversational agent against live telecommunication exploiters

Running the initial software successfully secured a bad actor in a smooth continuous interaction loop for fifteen minutes.

#9 about 4 min

Evaluating the hardware footprint and energy costs of audio

Deploying fine-tuned voice models locally on consumer hardware sidesteps the prohibitive power demands of large multimodal image generation systems.

#10 about 4 min

Measuring campaign effectiveness and telecommunication incident reporting

Beyond exhausting hacking resources proactively, releasing the conversational tool drove substantial increases in protective telemetry reporting.

#11 about 5 min

Demonstrating automated defense strategies at prominent cybersecurity conferences

Exposing the automated system to security red teams demonstrates robust methodologies for assessing infrastructure threats without jeopardizing real consumers.

Matching moments

1:50 min

Real-world voice cloning and targeted fraud cases

Wolfgang Ettlinger +1 · WWC 2023

3:05 min

Enhancing social engineering and phishing with generative AI

Chris Wysopal Chris Wysopal +2 · WWC 2024

1:44 min

Addressing the authenticity of AI translated video content

Chris Heilmann +2 · LIVE

2:27 min

Demonstrating a vulnerable AI sales agent application

Keno Dreßel Keno Dreßel · WWC 2025

1:23 min

Automating compromised roles through AI agents and backup scammers

George Proorocu George Proorocu · WWC Europe 2026

3:38 min

Scaling malicious tasks with autonomous AI agents

Wolfgang Ettlinger +1 · WWC 2023

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