// SECURITY · FIRMWARE · MOBILE
Keeping wireless & embedded systems honest.
Security across the whole stack — signal to app, offense to defense.
SELECTED WORK
WHAT I DO
01 / AUDITS
Security Audits
Wireless, embedded, and web — internal and external — tested the way an attacker would. Gaps close before anyone else finds them.
02 / FIRMWARE
Embedded Firmware
Detection and defense firmware for ESP32, M5Stack, and custom nodes. Lean code, close to the metal.
03 / MOBILE
Mobile & Full-Stack
iOS, Android, and the web behind them — designed, built, and shipped end to end.
04 / OPEN SOURCE
Open Source
Built in the open since 2010 — tools people actually run, not just star.
ABOUT
Root Down Digital is the practice of Luke Switzer — a security engineer and developer who has built and secured systems for over fifteen years. His offensive work spans engagements for private and public organizations and red-team operations; on defense, he has run Blue Team for a Fortune 200 enterprise. Through coordinated disclosure he has reported vulnerabilities responsibly, working directly with teams from Apple to Wyze.
The work runs the full stack: wireless and embedded research, detection firmware, and the iOS, Android, and web applications that tie it together — built privacy-first and maintained end to end. Across client engagements, shipped products, and open-source tooling, one test never changes — does it beat the modern adversary.
// WORK WITH ME
Have something worth building?
Security tooling, embedded firmware, and full-stack apps — researched, built, and maintained end to end.
Get in touch →