# theory - Functional Specification

**Version**: v1.0.0 | **Status**: Active | **Last Updated**: February 2026

## Purpose

Provides generic security considerations, principles, frameworks, threat modeling methodologies, risk assessment methods, security architecture patterns, and security best practices for the Codomyrmex platform.

## Design Principles

- **Framework Alignment**: Align with established security frameworks
- **Principle Application**: Apply security principles consistently
- **Threat Awareness**: Maintain threat awareness through modeling
- **Risk Management**: Manage risks through assessment
- **Best Practices**: Follow security best practices

## Functional Requirements

1. **Security Principles**: Apply fundamental security principles
2. **Security Frameworks**: Use established security frameworks (OWASP, NIST, ISO 27001)
3. **Threat Modeling**: Perform threat modeling and analysis
4. **Risk Assessment**: Conduct risk assessments and calculations
5. **Architecture Patterns**: Apply security architecture patterns
6. **Best Practices**: Follow security best practices

## Interface Contracts

### Security Principles

- `SecurityPrinciple`: Represents a security principle
- `get_security_principles()`: Get all principles
- `apply_principle()`: Apply a principle to context

### Security Frameworks

- `SecurityFramework`: Represents a security framework
- `get_framework()`: Get framework by name
- `apply_framework()`: Apply framework to context

### Threat Modeling

- `ThreatModel`: Represents a threat model
- `Threat`: Represents a security threat
- `create_threat_model()`: Create threat model
- `analyze_threats()`: Analyze threats in model

### Risk Assessment

- `RiskAssessment`: Results of risk assessment
- `Risk`: Represents a security risk
- `assess_risk()`: Perform risk assessment
- `calculate_risk_score()`: Calculate risk score

### Architecture Patterns

- `SecurityPattern`: Represents a security pattern
- `get_security_patterns()`: Get all patterns
- `apply_pattern()`: Apply pattern to context

### Best Practices

- `SecurityBestPractice`: Represents a best practice
- `get_best_practices()`: Get best practices
- `check_compliance_with_practices()`: Check compliance

## Supported Frameworks

- **OWASP Top 10**: Web application security risks
- **NIST CSF**: Cybersecurity framework
- **ISO 27001**: Information security management

## Error Handling

All operations handle errors gracefully:
- Unknown frameworks return None
- Invalid principles return error results
- Threat modeling handles missing data

## Configuration

Module uses default configurations but can be customized:
- Framework versions
- Risk calculation weights
- Pattern application rules
- Best practice priorities

## Navigation

- **Human Documentation**: [README.md](README.md)
- **Technical Documentation**: [AGENTS.md](AGENTS.md)
- **Parent**: [../SPEC.md](../SPEC.md)

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