How I Built Them: Custom Hardware Implants
c4m0ufl4g3
SAINTCON 2025 · Day 2 · Main Track 3
In this insightful SAINTCON presentation, c4m0ufl4g3, a Cyber Security Principal Engineer, walks the audience through the arduous yet rewarding journey of developing a custom hardware implant from initial proof-of-concept to a fully realized, open-source printed circuit board (PCB). The talk, titled "How I Built Them: Custom Hardware Implants," demystifies the complex process of hardware implant design, offering a unique perspective on the challenges, lessons learned, and iterative refinements involved. The project, known as **Injectal and Hide**, is a sophisticated hardware implant designed to sit between a keyboard and a computer, intercepting keystrokes and exfiltrating data via a covert mesh radio network.