Layer 8 Podcast Episode 139: Mathieu Gaucheler of Maltego
Mar 23, 2026
Mathieu Gaucheler, Senior subject matter expert at Maltego who builds OSINT tools and researches scam infrastructure. He talks about how Maltego visualizes investigations and avoids OSINT rabbit holes. He explores pig butchering scams and the scams-as-a-service economy. He also covers in-game gambling risks, OPSEC pitfalls from reused identifiers, and practical tools and workflows for investigators.
AI Snips
Chapters
Transcript
Episode notes
Timebox Questions And Treat Null Results As Findings
- Define a clear question and timebox effort; a null result is itself informative.
- Mathieu emphasized that broad searches waste time and that absence of evidence can guide the next question or pivot.
Try To Disprove Your Findings To Beat Bias
- Attempt to disprove your own findings to reduce confirmation bias.
- Mathieu advised trying to tear apart your investigation and look for alternative explanations to validate robustness.
Public Scribd Documents Revealed Scams As A Service
- A colleague found a complaint email that led to hundreds of public persona templates on Scribd used to train scammers.
- Mathieu and Nitish cataloged documents showing scripted personas and conversation scripts for scam operators.