Threat Assessment Methodology

A threat assessment evaluates the threat posed by a specific actor or scenario to a specific target. It combines Intent, Capability, and Opportunity into an overall Threat Level.

Formula

Threat = Intent + Capability + Opportunity

All three must be present for a credible threat. A highly capable actor with no intent poses minimal threat. A motivated actor with no capability poses minimal threat.

Assessment Components

Intent — What does the adversary want?

Rating	Criteria
Demonstrated	Active targeting observed, stated objectives, ongoing operations against similar targets
Probable	Historical targeting of similar organisations/sectors, geopolitical alignment, inferred from capability development
Possible	General capability exists, sector/geography falls within known interests, no direct indicators
Unlikely	No known interest in sector/geography, no historical targeting of similar targets

Evidence to assess intent:

• Direct targeting of the organisation or sector
• Stated objectives (manifestos, claims, leaked documents)
• Historical targeting patterns
• Geopolitical/economic motivations
• Reconnaissance activity observed

Capability — What can the adversary do?

Rating	Criteria
Advanced	Zero-day exploitation, custom tooling, state-level resources, proven track record of complex operations
Significant	Sophisticated TTPs, modified tools, professional operations, ability to adapt
Moderate	Known exploits and commodity tools, some custom capability, competent operations
Basic	Script-kiddie level, publicly available tools only, limited operational security

Evidence to assess capability:

• Known tools and malware sophistication
• Historical operations and their complexity
• Resources (financial, human, infrastructure)
• Ability to develop or acquire zero-days
• Operational security and counter-intelligence capability

Opportunity — What attack surface exists?

Rating	Criteria
Significant	Large internet-facing footprint, known unpatched vulnerabilities, supply chain exposure, limited security controls
Moderate	Some internet exposure, generally patched but gaps exist, reasonable security controls
Limited	Minimal attack surface, strong security controls, rapid patching, limited supply chain exposure
Minimal	Air-gapped or highly restricted, advanced security controls, comprehensive monitoring

Evidence to assess opportunity:

• Internet-facing services and known vulnerabilities
• Supply chain relationships and third-party access
• Security control maturity (detection, response)
• Employee exposure (social media, conferences)
• Historical incidents and near-misses

Combining into Threat Level

Level	Criteria
CRITICAL	Demonstrated intent + Advanced capability + Significant opportunity. Attack is imminent or ongoing.
HIGH	Strong intent indicators + Significant capability + Exploitable opportunity. Attack is highly likely.
MODERATE	Some intent indicators + Moderate capability + Some opportunity. Attack is a realistic possibility.
LOW	Limited intent indicators + Basic/Moderate capability + Limited opportunity. Attack is unlikely.
NEGLIGIBLE	No credible intent OR minimal capability OR no meaningful opportunity.

Output Template

## Threat Assessment: [Subject]
**Date**: YYYY-MM-DD | **Confidence**: [Level] | **TLP**: [Level]

### Threat Level: [CRITICAL/HIGH/MODERATE/LOW/NEGLIGIBLE]

### Intent: [Rating]
[Assessment with evidence and confidence]

### Capability: [Rating]
[Assessment with evidence and confidence]

### Opportunity: [Rating]
[Assessment with evidence and confidence]

### Combined Assessment
[Synthesis of intent + capability + opportunity into overall threat level. Use likelihood language for forward-looking statements.]

### Key Assumptions
[Per key-assumptions-check]

### Recommended Mitigations
1. [Prioritised by impact on reducing threat level]

### Sources
[With Admiralty Scale ratings]