Lion Cipher Lab

Analyze an intrusion with the Diamond Model

Why it matters

When a real intrusion lands on your desk, you get a chaotic pile of facts: a weird domain, a suspicious DLL, a list of affected machines, a rumor about who did it. Without a structure, analysts drown in it — and worse, they can't see what they're MISSING. The Diamond Model is the single most-used way to organize intrusion evidence into four buckets and then reason about the gaps. It is the mental scaffolding under most threat-intel work, and 'can you Diamond an intrusion?' is a genuine interview-grade skill for a threat-intel or SOC analyst.

What you'll learn

Steps in this lab

  1. First, what is an 'intrusion' — and why do you need a model?
  2. The four vertices, defined
  3. Set up your worksheet
  4. Choose a real, well-documented intrusion
  5. Fill the ADVERSARY vertex
  6. Fill the CAPABILITY vertex
  7. Fill the INFRASTRUCTURE vertex
  8. Fill the VICTIM vertex
  9. Draw the edges — connect the vertices into one event
  10. Make a pivot — the real analytic payoff
  11. What you built — and where it goes next

Open the full interactive lab →