Network policies are the single most impactful security control you can add to a Kubernetes cluster — and most clusters I audit don’t have a single one. After implementing network segmentation across enterprise clusters with hundreds of namespaces, I’ve developed a repeatable approach that works. Here’s the playbook I use. Introduction… Read more →
Security, DevOps & Trading Tech — Practical Guides
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UPS Battery Backup: Sizing, Setup & NUT on TrueNAS
A half-second power flicker during a ZFS scrub can corrupt your pool metadata if the write cache isn’t battery-backed. UPS battery backup isn’t optional for a NAS—it’s infrastructure. Sizing it correctly and wiring it into TrueNAS via NUT turns a catastrophic risk into a graceful shutdown. If you’re running a homelab… Read more →
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Insider Trading Detector with Python & Free SEC Data
Three directors at a mid-cap biotech quietly buying shares within a five-day window—right before a Phase 3 readout—is the kind of signal that hides in SEC filings until someone builds a script to surface it. Python plus the SEC EDGAR API makes insider trading pattern detection accessible to anyone willing… 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
Pasting production log data into Regex101 means your server paths, IPs, and request payloads are now on someone else’s infrastructure. A fully offline regex tester that runs in your browser eliminates that risk—and can do things Regex101 can’t, like multi-file batch matching and replacement previews. That’s the moment I decided to… Read more →
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Docker Compose vs Kubernetes: Secure Homelab Choices
Moving a homelab from Docker Compose to Kubernetes is a rite of passage that breaks half your services and teaches you why orchestration complexity exists. The real question isn’t which is better—it’s where the security and operational tradeoffs actually fall for a home environment. The real question: how big is your… 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
SMART warnings are the canary you ignore until a drive dies mid-rebuild. Choosing the right drives for TrueNAS in 2026 means navigating the HDD-vs-SSD transition, understanding CMR vs SMR write penalties, and accepting that consumer drives in a ZFS mirror are a calculated risk. That rebuild forced me to actually research… 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 →