Practical resource / 15 September 2026

Adversary Simulation Readiness Checklist

Define what an exercise should establish, who needs to be involved, and which decisions belong in scope before testing begins.

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Use this checklist before a scoping conversation. Mark anything unknown as Not sure and name who will find out.

A gap is a planning item, not a failed check. Keep system names, access details and incident information in your own approved records; general descriptions are enough here.

Frame the question

We want to establish whether __________ can reach __________, and whether our defenders can detect and contain it within agreed boundaries.

Name a business outcome, such as access to a restricted function, rather than a list of techniques.

Planning fieldYour notes
Decision this exercise should inform
Function or boundary in scope
Starting position: entry path tested, or access assumed
Exclusions and stop conditions
Target decision date

Check the conditions

Record Confirmed, Needs work or Not sure for each.

CheckStatusOwner or next action
A sponsor agrees the purpose and how findings will be used.
An authorised contact can approve scope, including third parties.
Someone can pause the exercise and reach operations quickly.
Logging and defensive visibility are understood, gaps included.
The Control Group, who know the exercise is running, is agreed.
Someone will own and prioritise the actions afterwards.

Pick a starting point

One system or release needs an answer. Start with a targeted penetration test.

You need to see attacker reach and defensive response across a scenario. Discuss adversary simulation.

You can act on findings and want to measure improvement over repeated operations. Discuss CAOS (Continuous Adversary Operations Service).

Several answers above are unknown. Resolve those first. A narrower scenario may be the right first step.

Bring the completed checklist to a scoping conversation. It is a planning aid, not an audit or a maturity assessment.