How to Run a Purple Team Exercise: A Step-by-Step Playbook

Key Takeaways

A purple team exercise only works if red and blue teams operate in the same room, watching the same alerts, in real time.
Scope your first engagement around 5 to 8 techniques mapped to threats your industry actually faces, not a generic top 10 list.
MITRE ATT&CK is the shared language that lets you score what you caught, what you missed, and why.
The exercise itself is the easy part. The value shows up when findings turn into SIEM rules, EDR policies, and updated playbooks.
Purple teaming pays off when it is a recurring habit, not an annual fire drill.

Introduction

Most purple team exercises die the same way. The session runs, everyone learns something, a report gets written, and then it sits in a shared drive nobody opens again. Three months later the same detection gap is still open.

Purple team exercises turn into forgotten reports for three reasons: no single person owns the fixes, no deadline is attached to them, and the findings never reach the people who actually write detection logic. The exercise gets treated as the deliverable, when the deliverable should be the changes it triggers.

That is the whole game. Half of successful attacks never trigger an endpoint alert, according to N-able’s 2026 State of the SOC Report. Purple teaming is the fastest way to find those blind spots before an attacker does, but only if the findings turn into tuned detections instead of a PDF.

SOC · Detection Validation

Why purple team exercises become forgotten reports

The exercise runs, everyone learns something, a report gets written. Then it sits in a drive nobody opens again. The difference between a wasted afternoon and a stronger SOC is what happens to the findings after the session ends.

The report that dies

Exercise runsRed and blue test a few techniques

Findings go in a slide deckWritten up after everyone moved on

No owner, no deadlineGaps have nobody attached to them

Detection team never sees itFindings never reach the people writing rules

Same gap still open three months later

The loop that closes

Exercise runsEach technique scored in real time

Gap register, not a reportTechnique, gap, owner, due date

Every gap has an ownerAnd a date it has to be fixed by

Fed into detection sprintsSIEM rules and playbooks get tuned

Gap closed, retested next cycle

A report is a record of what you found. A gap register with owners and dates is a list of what you are going to fix. Treat the register as the deliverable, not the exercise.

How do you scope a first purple team exercise and engagement

Scoping a first purple team exercise comes down to five decisions:

How many techniques to test
Which ones
Which threat actor to emulate
What counts as detected
When to stop.

Get those locked before day one and the exercise runs itself.

SOC · Purple Team Planning

Scope a first exercise with five decisions

Most purple team programs stall in planning because someone tries to test everything at once. Lock these five before day one and the exercise runs itself.

How many techniques?

Start smaller than feels comfortable. 5 to 8 techniques is enough for a first run.

5–8 techniques

Which techniques?

Credential access, defense evasion, and persistence cover a large share of real intrusions. Relevance beats coverage.

Relevance first

Which threat actor?

Pull from threat intel and past incidents in your sector, not a borrowed top 10 list.

Your sector

What counts as detected?

Agree up front. An alert nobody read does not count as a detection.

Define it

When do you stop?

Set rules of engagement and a clear stop signal so everyone knows the plan before the first command runs.

Rules of engagement

Lock scope, participants, rules of engagement, and success criteria before day one. The exercise itself is the easy part.

Most purple team programs die in the planning stage because someone tries to test everything at once. Start smaller than feels comfortable, and lock down scope, participants, rules of engagement, and success criteria before day one. A SIEM alert that nobody read does not count as a detection, so agree on what “detected” means up front.

How to prioritize which attack techniques to emulate

Pick 5 to 8 techniques tied to a threat actor your industry actually deals with. Credential access, defense evasion, and persistence techniques cover a large share of real intrusions and give you a baseline worth building on. Relevance beats coverage in a first exercise.

How do purple teams choose threat actor profiles

Pull from recent threat intelligence, incident reports in your sector, or your own past incidents rather than a generic checklist. A fintech company and a healthcare provider are not defending against the same playbook, so the profile should reflect the threats you actually face, not a list borrowed from someone else’s industry.

How to convert threat intelligence into emulation plans

This is mostly a translation exercise. Take the TTPs from a threat report, map each one to a MITRE ATT&CK technique ID, and write a one line test for each. By the time you are done, every line item in the report has a corresponding action your red side can run.

SOC · Threat Intel to Test

Turn a threat report into a runnable test

Converting threat intel into an emulation plan is mostly a translation job. Take each behavior from the report, map it to a MITRE ATT&CK technique, and write a one line test your red side can run.

From the report

The behavior

Actor dumps LSASS memory to steal credentials

Pulled straight from a threat report for your sector.

Map it

The ATT&CK ID

T1003.001
OS Credential Dumping: LSASS Memory

Every behavior gets a technique ID, so scoring is consistent.

Write it

The one line test

Run a credential dump against a test host, watch what the SOC catches

Now the red side has an action, the blue side has something to detect.

Do this for every line in the report. By the end, each finding has a matching action you can run and a technique ID you can score against.

How to run a purple team exercise step-by-step

Once scoping is done, the exercise itself follows a simple rhythm:

Brief the room. Confirm scope, timing, and what “stop” looks like. Everyone should know the plan before the first command runs.
Execute one technique at a time. The offensive side runs a single technique, whether that is a scheduled task for persistence or a credential dump. No stacking multiple techniques before checking results.
Watch the blue side in real time. Did an alert fire? Did an analyst notice? How long did it take from execution to detection? Write the number down, even if it is embarrassing.
Pause and compare notes. This is the actual purple part. Red walks through what they did, blue explains what they saw or did not see, and you name the gap out loud before moving to the next technique.
Repeat for each technique on the list, then debrief as a group.

How to map purple team exercises to MITRE ATT&CK

After each technique, mark the corresponding ATT&CK technique as detected, partially detected, or missed. Over a few exercises, that scorecard becomes a heat map of your actual coverage, which is a far more honest picture than a compliance checklist.

How to combine tabletop and live purple exercises

If your team is newer to this, walk through a scenario verbally first so everyone understands the attack chain, then run the live version. It slows the first session down but prevents confusion about what is actually being tested versus discussed.

How to close the loop between offense and defense

An exercise that ends with a slide deck nobody opens again was a waste of everyone’s time. The loop only closes when findings turn into changes, not when the session ends.

How to feed pentest results into soc playbooks

If an analyst did not know how to respond to a technique, that is a playbook gap, not a training gap. Update the runbook the same week, while the exercise is still fresh in everyone’s memory.

How to validate incident response playbooks with simulations

Did the escalation path work? Did the right people get paged? A purple team exercise is one of the few chances to test IR process without an actual incident on the clock.

How to document purple team exercise results

A short gap register works better than a long report: technique, what happened, what is missing, who owns the fix, and by when. The teams that get the most out of purple teaming treat this register as the actual deliverable, not the exercise itself.

How to align purple teaming with detection engineering sprints

Do not let gap findings sit in a backlog separate from the team that writes detection logic. Feed them directly into the same sprint cycle so SIEM tuning happens on a schedule, not whenever someone remembers.

How to build a continuous detection validation program

A single purple team exercise gives you a snapshot. A continuous program gives you a trend line, and that is what actually shows whether your SOC is improving. Track the same metrics every cycle: detection rate, mean time to detect, and how many previously missed techniques you closed since the last round.

SOC · Cadence

How often to run purple team exercises

Short answer: monthly, not annually. A single big engagement gives you one snapshot a year. A monthly rhythm gives you a trend line, and catches detection gaps the week they appear.

Annual fire drill

One big test a year

!A regression sits undetected for months

!Covers a lot at once, then goes stale fast

!Findings pile up faster than they get fixed

Monthly rhythm

Half a day, 8 to 12 techniques

✓Catches regressions the week they appear

✓Stays manageable for a lean team

✓Builds a coverage trend, not a snapshot

Smaller and more frequent wins. A half day every month catches the regression a SIEM rule tweak or new log source introduces, long before an attacker finds it.

How to schedule recurring attack simulations

Run purple team exercises monthly, not annually. A half day covering 8 to 12 techniques beats one big yearly engagement, because smaller frequent tests catch detection regressions the moment a SIEM rule or log source changes.

Even a monthly half day session covering 8 to 12 techniques beats one big annual engagement. Smaller, more frequent tests catch detection regressions when someone tweaks a SIEM rule or rolls out a new log source.

How to run purple teaming with a lean security team

You do not need a dedicated red team function to start. A single person who understands offensive tooling can run atomic tests against your environment while the rest of the SOC watches and responds. Keep the scope tight and it stays manageable.

How offense turns into hardened defense

A purple team exercise is offense feeding defense in one motion. The Red Teammate attacks inside an approved scope, the SOC Teammate scores what your defenses caught, and the gaps become tuned detections you can prove.

Step 1

Attack

Red Teammate

Runs approved techniques inside a defined scope and test window.

Step 2

Harden

SOC Teammate

Scores each technique against your SIEM and EDR, then turns misses into detection changes.

Step 3

Prove

Both, retested

Reruns the technique, records before and after, keeps the full audit trail.

Step 4

Repeat

Every cycle

Feeds the result into the next round, so coverage is a trend line, not a snapshot.

Attack. Harden. Prove. Repeat. // the teammate that attacks teaches the teammate that defends

Your team sets the rules. Scope, test windows, and consequential steps stay behind human approval. The work moves to the teammates; the authority stays with you.

Where Secure.com’s SOC Teammate fits in

Most of the friction in purple teaming is not the exercise. It is the work around it: pulling telemetry from five consoles to confirm what fired, mapping each technique to ATT&CK by hand, and writing the gap register after everyone has moved on.

Secure.com runs this as offense feeding defense. The Red Teammate runs the scoped techniques; the SOC Teammate watches the same alerts and scores what your defenses caught.

Your team approves consequential steps and keeps the full audit trail. Attack, harden, prove, repeat.
Red Teammate executes approved techniques inside a defined scope and test window, so the attack side is governed, not freelance.
SOC Teammate correlates the resulting alerts across your existing SIEM and EDR, in real time as the exercise runs.
Every technique is mapped to MITRE ATT&CK and marked detected, partially detected, or missed, so the scorecard writes itself.
Gap findings land in Slack, Teams, Jira, or ServiceNow, with an owner attached, so they reach detection engineering instead of a drive.

How automated ATT&CK correlation compares to manual scoring

The exercise itself is the easy part. The friction is everything around it: pulling telemetry from five consoles to confirm what fired, mapping each technique to ATT&CK by hand, and writing the gap register after everyone has moved on. That is where scoring either happens in real time or turns into a week of cleanup.

Step in the exercise	Manual scoring	SOC Teammate scoring
Confirming what fired	Analyst checks SIEM and EDR consoles one by one, after the session	Correlates alerts across your existing SIEM and EDR as the technique runs
Mapping to ATT&CK	Each technique matched to a tactic and technique ID by hand	Every alert mapped to the ATT&CK technique automatically
Detection verdict	Detected, partial, or missed decided later from memory and notes	Scored live as detected, partially detected, or missed
Writing the gap register	Assembled by hand once everyone has moved on	Findings routed into Slack, Teams, Jira, or ServiceNow with an owner attached
Who keeps authority	The team, but the work eats the week	Your team approves consequential steps; the teammate carries the correlation

FAQs

How can attack simulations train SOC analysts?

Watching a real technique unfold in your own environment teaches pattern recognition faster than any training slide. Analysts see exactly what a credential dump or a lateral movement attempt looks like in their actual telemetry, which sticks far better than a generic course.

How do purple teams choose threat actor profiles?

Start with threat intelligence relevant to your industry and past incidents in your own environment, rather than a generic top techniques list.

How to combine tabletop and live purple exercises?

Walk through the planned attack chain verbally first so the whole team understands the scenario, then run the live version against your environment.

How to run purple teaming with a lean security team?

Keep the scope tight. A single person running offensive tooling against 5 to 8 techniques, with the rest of the SOC watching and responding, is enough to start.

Conclusion

Purple teaming works because it turns an assumption about your defenses into a fact, one technique at a time. The exercise itself does not need to be complicated. Scope it tight, run it step by step, and treat the gap register that comes out the other side as the real deliverable. Do that on a repeatable schedule, and you stop guessing whether your SOC would catch a real attack and start knowing.

For more on turning this into a repeatable program rather than a one-time event, see Automating the Purple Loop With AI and Why Annual Red Teaming Is No Longer Enough.