Never Trust.
Always Verify.
Numquam Confide, Semper VerificaThe Latin root of this briefing — and of the whole idea of Zero Trust.
Every login, every device, and every request gets checked — every single time, with no free pass just because something is already "inside." That's Zero Trust: a security model built for a world where the old walls don't hold anymore.
TRUST — Verify Every Time —
The Perimeter Is Gone
For decades, network security worked like a castle: build a strong wall, watch the gate, and trust whatever gets inside. Cloud apps, remote work, and personal devices broke that model — there is no longer a single gate to guard.
Zero Trust drops the idea of a trusted network entirely. First formalized for U.S. federal agencies by NIST Special Publication 800-207 in 2020, it treats every user, device, and connection as unverified by default — inside the building or out — and grants access based on identity and context, re-checked continuously rather than assumed after the first login.
of confirmed data breaches trace back to stolen or misused credentials — exactly the weak point Zero Trust is designed to close.
Breach research cited in Zero Trust guidanceof reported cyber incidents across the EU were ransomware-driven in the most recent reporting window.
ENISA Threat Landscapethe 2021 federal order that made Zero Trust Architecture a requirement — not a recommendation — for U.S. agencies.
Executive Order, May 2021Three Parts, One File
This site is organized like the briefing document it's named for. Read it in order, or jump straight to the part you need.
Start With Article I
The briefing opens with the first and most fundamental tenet: verify explicitly, every time, no exceptions.
Read the Principles