About
Kyeson Blake Utley
Founder of Winternitz. Security engineer, Texas.
Background
Kyeson Blake Utley came to security engineering through blockchain forensics. At SpookyGood, the firm he founded in 2020, he traced stolen cryptocurrency for people who had lost savings to romance scams, pig-butchering schemes and fake investment platforms, and ran penetration tests and red-team engagements for clients.
After SpookyGood merged with Justice Solutions Group in 2024, he served as JSG’s chief technology officer and led the build of OnTrial, an AI-assisted investigations platform for attorneys. The same year he co-founded TRFFC, a non-profit Solana project funding investigators who work against human trafficking.
Why this practice
Following stolen funds through mixers, bridges and exchanges shows where digital systems really fail: almost never the cryptography itself, almost always key handling, trust boundaries and the gaps between components. Winternitz exists to build and test systems with those failure points in mind, and to get organizations ready for the quantum attacks that will break today’s public-key cryptography.
Focus
- Cryptography
- Post-quantum migration, hash-based signatures, protocol review
- Digital assets
- Custody and signing infrastructure, smart-contract audits, fund tracing
- Offense
- Penetration testing, red teaming, source-code review
- Based in
- Texas, USA
Elsewhere
- kyesonutley.com: personal site
- kyesonblakeutley.com: work and research portfolio
- kyeson.com: notes on security
- spookygood.net: SpookyGood, LLC archive
Have a system that has to hold?
Tell us what you're protecting and when it has to be ready. You'll get a straight answer on scope, timeline and price, usually within one business day.