Hands-On AI Security: Red Teaming Piper with 5 Prompt Injection Vectors
How to probe and break local LLMs using Direct Injection, Roleplay, Obfuscation, and Authority Claims, demonstrating why system instructions fail as security boundaries.
Prompt Injection
Hands-On AI Security: Building a Zero-Cost Local LLM Lab with Docker, Ollama, and Piper
How to build a 100% free, local AI security sandbox using Docker Desktop, Ollama (llama3.2), and a custom vulnerable chatbot to test prompt injection defenses without cloud API costs.
Teaching AI Security: Hands-On LLM Hardening with Docker Desktop and Security Gateways
In August 2026 I delivered a webinar for the NCyTE Center on a question I kept hearing from community college faculty: how do you teach AI security when you don’t have a budget, your IT department locks down what you can install, and API costs for a live LLM are unpredictable? The answer I built — and the one this post walks through — is a zero-cost, fully local lab that any instructor can drop into their course next week. ...