Most Zero Trust guides are theoretical whitepapers that never touch a real network. I’ve actually implemented Zero Trust on my home network — OPNsense firewall with micro-segmented VLANs, mTLS between services, and identity-based access for every endpoint. Here’s how I translate those same principles into developer-friendly patterns that work in… Read more →
Security, DevOps & Trading Tech — Practical Guides
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UPS Battery Backup: Sizing, Setup & NUT on TrueNAS
Last month my TrueNAS server rebooted mid-scrub during a power flicker that lasted maybe half a second. Nothing dramatic — the lights barely dimmed — but the ZFS pool came back with a degraded vdev and I spent two hours rebuilding. That’s when I finally stopped procrastinating and bought a… Read more →
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Insider Trading Detector with Python & Free SEC Data
Last month I noticed something odd. Three directors at a mid-cap biotech quietly bought shares within a five-day window — all open-market purchases, no option exercises. The stock was down 30% from its high. Two weeks later, they announced a partnership with Pfizer and the stock popped 40%. I didn’t catch… Read more →
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Track Pre-IPO Valuations: SpaceX, OpenAI & More
SpaceX is being valued at $2 trillion by the market. OpenAI at $1.3 trillion. Anthropic at over $500 billion. But none of these companies are publicly traded. There’s no ticker symbol, no earnings call, no 10-K filing. So how do we know what the market thinks they’re worth? The answer lies… Read more →
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RegexLab: Free Offline Regex Tester With 5 Modes Regex101 Doesn’t Have
Last week I was debugging a CloudFront log parser and pasted a chunk of raw access logs into Regex101. Mid-keystroke, I realized those logs contained client IPs, user agents, and request paths from production. All of it, shipped off to someone else’s server for “processing.” That’s the moment I decided to… Read more →
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Docker Compose vs Kubernetes: Secure Homelab Choices
Last year I moved my homelab from a single Docker Compose stack to a K3s cluster. It took a weekend, broke half my services, and taught me more about container security than any course I’ve taken. Here’s what I learned about when each tool actually makes sense—and the security traps… Read more →
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5 Best Finance APIs for Tracking Pre-IPO Valuations in 2026
Why Pre-IPO Valuation Tracking Matters in 2026 📌 TL;DR: Why Pre-IPO Valuation Tracking Matters in 2026 The private tech market has exploded. SpaceX is now valued at over $2 trillion by public markets, OpenAI at $1.3 trillion, and the total implied market cap of the top 21 pre-IPO companies exceeds $7… Read more →
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Best Drives for TrueNAS 2026: HDDs, SSDs & My Setup
Last month I lost a drive in my TrueNAS mirror. WD Red, three years old, SMART warnings I’d been ignoring for two weeks. The rebuild took 14 hours on spinning rust, and the whole time I was thinking: if the second drive goes, that’s 8TB of media and backups gone. That… Read more →
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CVE-2026-20131: Cisco FMC Zero-Day Exploited by Ransomware
I triaged CVE-2026-20131 for my own network the day it dropped. If you run Cisco FMC anywhere in your environment, this is a stop-what-you’re-doing moment. A critical zero-day vulnerability in Cisco Secure Firewall Management Center (FMC) has been actively exploited by the Interlock ransomware group since January 2026 — more than… Read more →
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Claude Code Leak: npm Security, TypeScript, AI Architecture
When source maps for a major AI coding tool leaked via an npm package, I spent a week analyzing what was exposed and how it happened. The leak revealed internal architecture, agent orchestration patterns, and TypeScript code that was never meant to be public. This isn’t theoretical — it’s a… Read more →