People prove themselves
before they are trusted.
So should AI agents.

In cyber operations, trust should come from performance, not assumption.

FIFTH DOMAIN provides technology and evaluation environments that test AI agents and operators in realistic missions, showing how they act, decide and perform before they are relied on.

Your mission. Your force. Intelligence to strengthen both.

Cyber AI creates a new assurance problem.

Before an AI system is trusted in cyber operations, organisations need to know how it behaves under pressure, whether it stays inside the mission, and how it performs alongside people.

Benchmarks and claims are not enough. Mission performance matters.

Can it do the work?

Test AI systems against realistic cyber missions and record how well they perform.

Can it stay inside the rules?

Observe actions, decisions, tools used and outcomes against the mission rules.

Can teams rely on it?

Learn how AI agents, operators and teams perform together in practice.

AI behaviour matters as much as AI performance.

FIFTH DOMAIN evaluates how AI systems perform in cyber work: what they do, where they fail, how they use tools, whether they follow the mission, and what needs to improve before they are relied on.

We look beyond whether it worked.

Behaviour

What did the AI system actually do at each stage of the mission?

Performance

Did it achieve the mission objectives under realistic conditions?

Assurance

What evidence supports a decision to trust and deploy it?

Cyber Force Intelligence turns mission activity into evidence.

FIFTH DOMAIN exercises AI agents and cyber operators in realistic cyber missions, capturing what actually happens inside them. That activity is turned into intelligence organisations can use to design, develop and deploy human and AI cyber capability with confidence.

How mission activity becomes intelligence

Mission activity

Realistic cyber missions are run.

Observed evidence

Actions, decisions, tradecraft, performance and outcomes are captured.

Cyber Force Intelligence

Mission activity is turned into decision-grade intelligence.

Force decisions

Organisations understand what to improve, trust, invest in or deploy.

Deployment assurance

Human and AI cyber capability can be relied on with greater confidence.

Applied research that strengthens cyber AI assurance.

FIFTH DOMAIN’s Cyber AI Research Lab studies how AI agents perform in realistic cyber missions, how they work alongside cyber operators, and what needs to be understood before they are relied on. Using generated cyber missions, we observe how agents act, decide, use tools, respond to changing conditions and perform against mission objectives.

This research strengthens Cyber Force Intelligence by improving how missions are designed, how performance is evaluated and how human and AI capability is aligned to operational requirements.

What the research helps us understand

AI-agent evaluation

Understand what AI agents can demonstrate under realistic mission conditions.

Mission assurance

Turn observed behaviour, decisions and outcomes into evidence for assurance.

Human-AI teaming

Study how cyber operators and AI agents work individually and together.

Evaluation methods

Develop repeatable approaches for evaluating capability, limitations and mission suitability.

One connected system.

Mission activity in. Decision-grade intelligence out.

FIFTH DOMAIN combines mission-generation technology, evaluation environments and intelligence systems to help organisations understand capability, identify gaps, align the right force to the mission and support confident deployment decisions.

Generate the mission

FIFTH DOMAIN’s mission-generation technology creates realistic cyber missions, objectives and operating conditions for evaluating human and AI capability.

Evaluate the force

XORCISE evaluates AI-agent behaviour and capability under realistic cyber mission conditions.

5D.PRO provides evidence of demonstrated cyber operator capability.

Connect the intelligence

FIFTH DOMAIN’s intelligence system connects mission results, identifies capability gaps and guides next actions for assurance, development and deployment decisions.

We do not replace accountable decision-makers.

FIFTH DOMAIN does not decide what should be trusted, improved or deployed. We produce the intelligence accountable people need to decide what to trust, what to improve, what to invest in and what to deploy.

Evidence before deployment. Intelligence for accountable decisions.

Know what you are relying on before you deploy it.

Bring the mission, capability gap or AI behaviour you need to understand. FIFTH DOMAIN can help turn it into intelligence for accountable decisions.

Where to next.

Explore the next step across FIFTH DOMAIN’s products, research, resources and company information.

Cyber Force Intelligence

Your mission. Your force. The intelligence to strengthen both.