The Segmented Nerd is a biweekly journal about lateral security — the increasingly important practice of controlling and detecting what moves inside the perimeter. Micro-segmentation, distributed firewalling, east-west NDR, identity-aware policy, and the platforms shaping how we defend internal networks.
Essays land on the 1st and 15th of every month. The cadence is intentional: fast enough to track a fast-moving product and threat landscape, slow enough that each piece is actually worth your time. Each one aims to tie recent news — product updates, notable incidents, real threat activity — to something useful you could actually do this sprint.
Who this is for
Security and network engineers. The people configuring distributed firewalls, writing segmentation policy, and triaging NDR alerts. If you spend your day thinking about traffic that never touches the internet, you're the reader.
Who writes it
Written by Josh Green. Views are my own. I try hard to be accurate about products and capabilities; when I'm uncertain about something, I'll say so in the essay.
Elsewhere
Source lives on GitHub. Corrections and typo PRs welcome.
— J.G. · Founding editor