Purple Team Assessment

Our Approach

Two teams, one objective

We collapse the wall between offense and defense. Instead of trading a report weeks after the fact, red and blue sit together, attack together, and improve together, turning every scenario into an on-the-spot upgrade to your detection stack.

Collaborative by Design

// side by side

Live red/blue collaboration in a shared workspace throughout the engagement
Shared objectives so both teams measure success the same way
A real-time feedback loop between attacker action and defender response
Direct knowledge transfer that lifts your team's tradecraft as we go

Scenario-Driven Testing

// real threats

Emulate relevant adversary TTPs mapped to MITRE ATT&CK
Exercise the full detect-respond chain, not isolated alerts
Iterate detections and re-test to confirm real improvement
Prioritize scenarios that reflect the threats your business actually faces

The Arcanum Difference

Can your SOC catch a rogue AI agent?

Attackers now move at machine speed, AI-accelerated intrusions, prompt-injected agents turning your own tooling against you, and autonomous actors that pivot faster than an analyst can triage. Almost no one is testing whether detection and response can keep up. We are. Arcanum is the offensive team that wrote the methodology on attacking AI, so we bring those exact attacks into your purple team engagement and measure whether your defenders see them, and how fast they react.

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Rogue & Runaway Agents

Autonomous AI agents carry real permissions, data access, and tool connectors, and can be hijacked or drift off-script. We simulate an agent turned against you and measure whether your monitoring ever flags it.

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Prompt-Injection-Driven Attacks

Indirect prompt injection hidden in a document, ticket, or email that makes an AI assistant act maliciously on an attacker's behalf. We run it and test whether your detection recognizes AI-initiated actions for what they are.

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AI-Accelerated Adversaries

Threat actors using AI to compress the kill chain to machine speed. We attack at that tempo and measure whether your detect-and-respond loop can actually keep pace.

Backed by Arcanum's Attacking AI and Red Blue Purple AI research, and our AI Penetration Testing & Red Teaming service.

Why Arcanum

Detection you can measure

Our operators have built and broken defenses at every scale. We bring that offensive depth into the room with your team so the improvements stick long after we leave.

Measurable Detection Uplift

Every engagement establishes a baseline and re-tests against it, so you can point to a concrete before-and-after in what your stack catches.

ATT&CK-Mapped Coverage

Scenarios and findings map to MITRE ATT&CK, giving you a shared language and a clear heat-map of where coverage is strong and where it is thin.

Real-Time Tuning

When a technique slips past, we tune the detection on the spot and prove the fix, no waiting weeks for a report to close the gap.

Lasting Team Capability

Your defenders learn attacker tradecraft firsthand, walking away with sharper instincts and repeatable methods they own.

Hands-On Senior Operators

No replayed automation or canned BAS scripts. Every scenario is run live by senior operators who adapt to what your defenders do in real time.

Detections for Your Stack

We tune and author detections for whatever you run, Splunk, Sentinel, Elastic, CrowdStrike, Defender, and more, so the fixes land in your tooling, not a vendor's demo.

How It Runs

A structured loop, scored on three axes

Every scenario is measured the same way, did we prevent it, did you detect it, and how fast did you respond? That prevent / detect / respond-speed spine turns a fuzzy "are we secure?" into a number you can move, engagement over engagement.

Scope & Threat-Model

We agree on the adversaries and objectives that matter to your business, and the crown jewels worth defending.

Baseline

We run the first scenarios cold to capture an honest starting point: what your stack and team catch today, before any tuning.

Live Detect-and-Tune Loop

Red attacks, blue watches, and we tune detections on the spot: the collaborative core of the engagement, repeated across techniques.

Re-Test & Validate

We replay what slipped past to prove the new detections fire, no gap is closed on paper alone.

Roadmap & Knowledge Transfer

You leave with a prioritized improvement roadmap and defenders who learned the tradecraft firsthand.

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Scaled to Your Maturity

From a guided, teaching-heavy pace for a young SOC to a fast, adversarial tempo for a seasoned team: we match the cadence to your defenders.

Your Outcome

What you walk away with

You leave with more than a document. You leave with tuned detections, a clear coverage picture, and a team that has practiced against a live adversary.

What our findings detail

// deliverables

Detection gaps found across the tested scenarios
Which TTPs your stack missed versus caught
Working, ready-to-deploy detections, Sigma or native queries for your SIEM, plus EDR tuning guidance, not a to-do list
An ATT&CK coverage heat-map of your environment
A prioritized improvement roadmap you can act on

What you gain

// outcomes

A measurable lift in detection and response performance
Faster, more confident triage from a battle-tested team
A clear, shared view of where to invest next
Defensive tradecraft your team can repeat on its own