About Blue Team of One

Field notes from someone who does the work, not just reads about it.

Blue Team of One is a practitioner blog about defensive security across the whole stack — identity and access, detection engineering, incident response, endpoint and email security, and cloud posture. The premise is in the name: real security problems get hit from many directions at once, so the writing follows the problem across every vector rather than staying in one lane.

Each piece comes out of actual engagement work and gets written up as a pattern — the reusable lesson, the mechanism, the gotcha — never as a client story. Two formats, roughly weekly: a deep dive that takes one mechanism or investigation apart to the wiring, and a short that captures a single sharp lesson you can read in three minutes.

What you'll find here

Detection tuning that turns alert noise into signal. Identity edge cases — Conditional Access gaps, token binding, PRT and session-key mechanics. Incident anatomies of the attacks that actually land, like adversary-in-the-middle token theft. Cloud and endpoint hardening, and the config traps that quietly weaken a tenant. The bias throughout is toward precision: what's really happening under the hood, and where the common mental model is subtly wrong.

On sources and specifics

Everything published here is generalized. No client names, no real domains, no ticket numbers, no user data — incidents are described as archetypes and numbers are illustrative. The value is in the technique, which travels; the specifics stay where they belong.