J Regele jregele

What we do is secret

-- Darby Crash

I spend my days thinking about security gaps in high dimensional spaces. Applies well to both adversarial AI and lattice-based cryptography....

In a previous life I was co-founder and Managing Director of Arxum Path Security GmbH. I hold OSCP and OSWE certs from Offensive Security, and my experience ranges from embedded C development of hardening OpenCAN automotive networks with CANCrypt to gradient-based attack techniques against Neural Network classifier models. I am a subject matter expert in crypto wallet security, and have spoken at Secureum's TrustX in Istanbul on the matter.

Research

Current research focuses on attacking probability spaces in Transformer architectures, Fully Homomorphic Encryption optimizations using the CKKS scheme for private ML inference, and a multi-party Zero-Knowledge Proof protocol scheme using altered lattice-based public key derivation schemes.

Published Audits

Most of my professional work is private, but here are some published audits I've been a part of.

Client	Project Name	Date	Report	Type	Language
5North	5N Loop Wallet	May 2026	📄	Wallet	Go Typescript
Velar Labs	Clarity Smart Contracts	May 2024	📄	Smart Contracts	Clarity
POKT Network	Sparse Merkle Trie (SMT)	June 2024	📄	Sparse Merkle Trie Cryptographic Implementation	Go
MetaMask	Snaps Extension Integration	September 2023	📄	Browser Extension	TypeScript
MetaMask	Snaps	September 2023	📄	Browser Extension	TypeScript
MetaMask	Extension – Seed Phrase Implementation	July 2022	📄	Browser Extension	TypeScript
Leather formerly Hiro	Stacks Wallet Extension	April 2021	📄	Browser Extension	TypeScript
Tezos Foundation	Kukai Wallet	March 2022	📄	Wallet	TypeScript
Loopring	Loopring 3.6 Design + Implementation: Circuit	March 2021	📄	ZK Cryptography	C++