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Hi, I'm William Zujkowski

Senior Information Security Engineer with 15+ years securing federal platforms. I spent last Saturday at 2 AM debugging a K3s cluster in my homelab – and loved every minute of it. Here, I share what works, what spectacularly fails, and the lessons I've learned from breaking things (legally, of course) since 2010.

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William Zujkowski
"A robot may not harm humanity, or, by inaction, allow humanity to come to harm."
— Isaac Asimov, The Zeroth Law

That nerdy kid in 1995 devouring Foundation and Empire under the covers with a flashlight? Yeah, that was me. Now I'm helping secure a FedRAMP Moderate platform while running local LLMs on my RTX 3090 to explore AI security. I'm implementing the actual controls to keep AI systems safe – thinking about the same questions Asimov posed, just with more YAML files, threat models, and 3 AM security patches than I expected. Some dreams do come true.

Recent Posts

Security insights, AI experiments, homelab adventures, and lessons from the field.

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What I Do

Areas of expertise and interests

Security Engineering

Implementing Zero-Trust architectures for federal systems. I've learned that microsegmentation isn't just theory – it's what stops lateral movement when something gets through.
Homelab & Automation

Started with a $50 Raspberry Pi in 2015, now running enterprise gear in my basement. I've broken it 47 times and learned something valuable every single time.
AI & Security

Running local LLMs for security research and AI safety experiments. That childhood obsession with Asimov's Three Laws evolved into real work on AI alignment and building systems that actually follow their rules.
Knowledge Sharing

Writing 73+ blog posts about security, AI safety, and homelab experiments. My most popular posts openly admit "here's what I broke and what I learned" because vulnerability makes better content than polish.

Let's Connect

Got a security question? Building your first homelab and wondering if you really need that 10Gbe switch? Debating if that CVSS 7.2 vulnerability is worth an emergency patch at 10 PM? (Spoiler: it probably is – I've learned this the hard way.) Let's chat. I love talking shop with fellow security enthusiasts, sharing war stories, and helping others avoid the mistakes I've made.

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