Attack Tree Construction

Systematic attack path visualization and analysis.

When to Use This Skill

• Visualizing complex attack scenarios
• Identifying defense gaps and priorities
• Communicating risks to stakeholders
• Planning defensive investments
• Penetration test planning
• Security architecture review

Core Concepts

1. Attack Tree Structure

                    [Root Goal]
                         |
            ┌────────────┴────────────┐
            │                         │
       [Sub-goal 1]              [Sub-goal 2]
       (OR node)                 (AND node)
            │                         │
      ┌─────┴─────┐             ┌─────┴─────┐
      │           │             │           │
   [Attack]   [Attack]      [Attack]   [Attack]
    (leaf)     (leaf)        (leaf)     (leaf)

2. Node Types

3. Attack Attributes

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SAST Configuration

Static Application Security Testing (SAST) tool setup, configuration, and custom rule creation for comprehensive security scanning across multiple programming languages.

Overview

This skill provides comprehensive guidance for setting up and configuring SAST tools including Semgrep, SonarQube, and CodeQL. Use this skill when you need to:

• Set up SAST scanning in CI/CD pipelines
• Create custom security rules for your codebase
• Configure quality gates and compliance policies
• Optimize scan performance and reduce false positives
• Integrate multiple SAST tools for defense-in-depth

Core Capabilities

1. Semgrep Configuration

• Custom rule creation with pattern matching
• Language-specific security rules (Python, JavaScript, Go, Java, etc.)
• CI/CD integration (GitHub Actions, GitLab CI, Jenkins)
• False positive tuning and rule optimization
• Organizational policy enforcement

2. SonarQube Setup

• Quality gate configuration
• Security hotspot analysis
• Code coverage and technical debt tracking
• Custom quality profiles for languages
• Enterprise integration with LDAP/SAML

3. CodeQL Analysis

• GitHub Advanced Security integration
• Custom query development
• Vulnerability variant analysis
• Security research workflows
• SARIF result processing

Quick Start

Initial Assessment

1. Identify primary programming languages in your codebase
2. Determine compliance requirements (PCI-DSS, SOC 2, etc.)
3. Choose SAST tool based on

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Security Requirement Extraction

Transform threat analysis into actionable security requirements.

When to Use This Skill

• Converting threat models to requirements
• Writing security user stories
• Creating security test cases
• Building security acceptance criteria
• Compliance requirement mapping
• Security architecture documentation

Core Concepts

1. Requirement Categories

Business Requirements → Security Requirements → Technical Controls
         ↓                       ↓                      ↓
  "Protect customer    "Encrypt PII at rest"   "AES-256 encryption
   data"                                        with KMS key rotation"

2. Security Requirement Types

3. Requirement Attributes

Templates

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STRIDE Analysis Patterns

Systematic threat identification using the STRIDE methodology.

When to Use This Skill

• Starting new threat modeling sessions
• Analyzing existing system architecture
• Reviewing security design decisions
• Creating threat documentation
• Training teams on threat identification
• Compliance and audit preparation

Core Concepts

1. STRIDE Categories

S - Spoofing       → Authentication threats
T - Tampering      → Integrity threats
R - Repudiation    → Non-repudiation threats
I - Information    → Confidentiality threats
    Disclosure
D - Denial of      → Availability threats
    Service
E - Elevation of   → Authorization threats
    Privilege

2. Threat Analysis Matrix

Templates

Template 1: STRIDE Threat Model Document

# Threat Model: 

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</details>

### threat-mitigation-mapping

> Map identified threats to appropriate security controls and mitigations. Use when prioritizing security investments, creating remediation plans, or validating control effectiveness.

<details>
<summary>View skill definition</summary>

# Threat Mitigation Mapping

Connect threats to controls for effective security planning.

## When to Use This Skill

- Prioritizing security investments
- Creating remediation roadmaps
- Validating control coverage
- Designing defense-in-depth
- Security architecture review
- Risk treatment planning

## Core Concepts

### 1. Control Categories

Preventive ────► Stop attacks before they occur │ (Firewall, Input validation) │ Detective ─────► Identify attacks in progress │ (IDS, Log monitoring) │ Corrective ────► Respond and recover from attacks (Incident response, Backup restore)

### 2. Control Layers

| Layer           | Examples                             |
| --------------- | ------------------------------------ |
| **Network**     | Firewall, WAF, DDoS protection       |
| **Application** | Input validation, authentication     |
| **Data**        | Encryption, access controls          |
| **Endpoint**    | EDR, patch management                |
| **Process**     | Security training, incident response |

### 3. Defense in Depth

                ┌──────────────────────┐
                │      Perimeter       │ ← Firewall, WAF
                │   ┌──────────────┐   │
                │   │   Network    │   │ ← Segmentation, IDS
                │   │  ┌────────┐  │   │
                │   │  │  Host  │  │   │ ← EDR, Hardening
                │   │  │ ┌────┐ │  │   │

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