I'm the founder of GhostKey Development, a Texas firm that builds and tests security-critical systems. I'm also Chief Technology Officer of Northwest Investigative Services (NWISI), where I lead the device forensics practice. Before that I worked in blockchain forensics, tracing stolen cryptocurrency for fraud victims, and served as CTO of Justice Solutions Group.
The essays on this site come from what I see in that work: findings from penetration tests, patterns in how systems fail, and the gap between how security is designed and how it's actually built. New pieces go up every few weeks. For a longer treatment of post-quantum migration, see my white paper, Post-Quantum Migration: A Practical Playbook for Engineering Teams (Zenodo, 2026), and the companion slide deck.
My main site, with a full bio, is kyesonutley.com. My projects and testing methodology are at kyesonblakeutley.com. You can reach me on X or LinkedIn.