# 2507 Checkpoint3 Tier2 Analysis A10c66d7

> Phase 1 Checkpoint 3: Tier 2 Security Frameworks Analysis

- Skill: `tools-only/2507-checkpoint3-tier2-analysis-a10c66d7` (Agent Skill, multi-file: 3 files)
- Install (CLI): `npx skillmds@latest add tools-only/2507-checkpoint3-tier2-analysis-a10c66d7`
- Raw SKILL.md: https://api.skillmd.com/api/skills/tools-only/2507-checkpoint3-tier2-analysis-a10c66d7/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Security
- Author: tools-only (https://skillmd.com/u/tools-only)
- Updated: 2026-09-22
- Page: https://skillmd.com/skills/tools-only/2507-checkpoint3-tier2-analysis-a10c66d7

---

# Phase 1 Checkpoint 3: Tier 2 Security Frameworks Analysis

**Date**: January 25, 2026
**Status**: Complete

## Security Frameworks Analyzed

### 1. TikiTribe/claude-secure-coding-rules

**Purpose**: Open-source security rules guiding Claude Code to generate secure code by default

**Standards Coverage**:
- OWASP Top 10 2025
- AI/ML Security (NIST AI RMF, MITRE ATLAS, Google SAIF)
- Agentic AI Security
- 100+ rule sets

**Repository Structure**:
```
_core/           owasp-2025.md, ai-security.md, agent-security.md, rag-security.md
languages/       12 languages (Python, JavaScript, TypeScript, Go, Rust, Java, C#, Ruby, R, C++, Julia, SQL)
backend/         5 frameworks + 11 AI/ML (FastAPI, Express, Django, Flask, NestJS, LangChain, CrewAI, AutoGen, etc.)
rag/             51 tools (orchestration, vector DBs, embeddings, chunking, search/rerank)
frontend/        5 frameworks (React, Next.js, Vue, Angular, Svelte)
iac/             Terraform, Pulumi
containers/      Docker, Kubernetes
cicd/            GitHub Actions, GitLab CI
```

**Rule Format**:
```
DO: Specific secure implementation
DON'T: Specific insecure pattern
WHY: Explanation of risk
REFS: Links to authoritative sources
```

**Enforcement Levels**:
| Level | Behavior |
|-------|----------|
| strict | Refuse to generate insecure code |
| warning | Warn and offer secure alternatives |
| advisory | Mention security consideration |

**Hierarchy**: Global (~/.claude/CLAUDE.md) → Project (.claude/CLAUDE.md) → Directory (src/.claude/CLAUDE.md)

**ZERG Application**: Comprehensive security rule library for worker context, hierarchical rule application pattern

---

### 2. fr0gger/nova-claude-code-protector

**Purpose**: Security monitoring and prompt injection defense using NOVA Framework

**Architecture**: Claude Code hook system (SessionStart, PreToolUse, PostToolUse, SessionEnd)

**Protection Modes**:
| Mode | Trigger | Action |
|------|---------|--------|
| ACTIVE | PreToolUse | Blocks dangerous commands before execution |
| PASSIVE | PostToolUse | Warns Claude after content read |

**Blocked Commands (ACTIVE)**: rm -rf, sudo rm, mkfs, dd, fork bombs, credential exfiltration

**Three-Tier Detection**:
| Tier | Latency | Method |
|------|---------|--------|
| Keywords | ~1ms | Regex patterns for known attacks |
| Semantics | ~50ms | ML similarity for paraphrased attacks |
| LLM | ~500-2000ms | AI evaluation for sophisticated attacks |

**Attack Categories**: Instruction Override, Jailbreak/Role-Playing, Encoding/Obfuscation, Context Manipulation

**Session Tracking**: JSONL logs, HTML reports (timeline, filtering), AI-powered summaries

**Custom Rules** (.nov files): meta, keywords, semantics, llm, condition sections

**ZERG Application**: Hook architecture for orchestrator monitoring, session logging for audit trail, three-tier detection for worker outputs

---

### 3. github/codeql-coding-standards

**Purpose**: CodeQL queries for safety-critical C/C++ compliance

**Standards Coverage**: AUTOSAR C++14, SEI CERT C++, SEI CERT C, MISRA C 2012

**Key Features**:
- Deviation records (permitted rule violations)
- Guideline re-categorization plans
- SARIF 2.1.0 output for compliance reporting
- Query suites for different rule sets

**ZERG Application**: Compliance management architecture, deviation record pattern

---

## Security Pattern Synthesis

### Defense-in-Depth Architecture

```
┌─────────────────────────────────────────────────────────────┐
│                    LAYER 1: DESIGN TIME                     │
│  claude-secure-coding-rules: Generate secure code by default│
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                    LAYER 2: RUNTIME                         │
│  nova-protector: Monitor and block dangerous operations     │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                    LAYER 3: ANALYSIS                        │
│  codeql-coding-standards: Static analysis for compliance    │
└─────────────────────────────────────────────────────────────┘
                              │
                              ▼
┌─────────────────────────────────────────────────────────────┐
│                    LAYER 4: AUDIT                           │
│  Session reporting and compliance documentation             │
└─────────────────────────────────────────────────────────────┘
```

### Critical Gaps in ZERG

| Gap | Impact | Mitigation Source |
|-----|--------|-------------------|
| No secure code generation rules | Workers may generate vulnerable code | claude-secure-coding-rules |
| No runtime protection | Prompt injection attacks undetected | nova-protector |
| No audit trail | Cannot verify what workers did | nova-protector session tracking |
| No compliance management | Cannot document deviations | codeql-coding-standards patterns |

### Recommended Security Integration

**Phase 1: Foundation**
1. Add claude-secure-coding-rules to worker context
2. Implement hook architecture for monitoring

**Phase 2: Runtime Protection**
1. Integrate nova-protector patterns for orchestrator
2. Add session logging for audit trail
3. Implement three-tier detection for worker outputs

**Phase 3: Compliance**
1. Add deviation record support for task specifications
2. Implement SARIF output for analysis integration