AI red-team · safety & security research

Cassius Oldenburg

I'm a self-taught AI red-teamer. I break deployed language models — prompt injection, context manipulation, and the gap between what a system is configured to refuse and what it actually does. In my first year I took first place at HackAPrompt 2.0 out of 40,000+ and published Context Is Everything. I'm moving into tech from outside it, and looking for a team to do this work with.

Open to work — AI red-teaming, safety & security research / engineering
Research selected work
Mar 2026 · rev May

Empirical study of system-prompt-induced compliance in Claude Code — measuring how much refusal behavior is carried by operator context versus the model.

7 categories · 21 prompts · 210 A/B runs
Sep 2025

1st place out of 40,000+ participants.

indirect prompt injection · MATS × Trails
2026

Jailbreaking and misuse red-team arena — top 4% globally.

live competitor profile
Tools open source
Jan 2026

Claude Code system-prompt injection tool — turn Claude into Einstein, Le Guin, or Vonnegut.

composable YAML profiles · paper
Dec 2025

Chrome DevTools Protocol MCP server.

raw CDP over WebSocket · 39/39 automation tests · no puppeteer
Mar 2026

Local LLM on handheld gaming devices.

Qwen 0.5B · llama.cpp · Miyoo / TrimUI · no internet required
Jan 2026 – present

164k views · 424 subscribers — long-horizon agentic tasks, fully AI-operated.

autonomous pipeline · no human in the loop
Connect say hi
codebergred-core
consultingredcore.zip