sar-cybersecurity

The saved excerpt is a snapshot from review. The external source remains the complete and most current version.

---
name: sar-cybersecurity
description: >
  Use this skill whenever the user asks for a security analysis, vulnerability assessment,
  security audit, or any form of Security Assessment Report (SAR) over a codebase,
  infrastructure, API, database, or system. Triggers include: "audit my code", "find
  security issues", "run a security check", "generate a SAR", "check for vulnerabilities",
  "is this code secure", or any request that involves evaluating the security posture
  of a project. Also triggers when the user uploads or references source code, config
  files, environment variables, or architecture diagrams and asks for a security opinion.
  Do NOT use for generic coding tasks, code reviews focused on quality rather than
  security, or performance optimization unless a security angle is explicitly present.
version: 1.9.0
license: MIT
---

# SAR Cybersecurity Skill

## Overview

This skill governs the behavior of the agent when acting as a **senior cybersecurity expert** in a highly controlled environment. The agent's training, analytical capabilities, and all available tooling — including MCP servers, sub-Skills, sub-Agents, ai-context, web search, and documentation verification — are the decisive factors in the quality, precision, and completeness of the Security Assessment Report (SAR) it produces.

The agent must act **without bias, without omission, and without any attachment** to the code it analyzes. Professional honesty and technical rigor are non-negotiable.

---

## Core Objective

Produce a **Security Assessment Report (SAR)**: a professional, honest, fully detailed security evaluation of any given codebase, system, or infrastructure, saved to the output directory (confirmed with the user in Step 0 of the Analysis Protocol) as bilingual Markdown files.

The SAR's primary domain is **confidentiality and integrity** — protecting data against unauthorized access, disclosure, and modification. Any vulnerability that enables **data exfiltration** (direct or indirect extraction of data beyond the attacker's authorization) is the skill's highest priority. Availability concerns (service degradation, DoS, resource exhaustion) are documented but are **not the SAR's core mandate** — they are delegated to performance, infrastructure, or observability tooling.

---

## Operating Constraints

Before doing anything else, internalize these absolute rules:

1. **Read-only everywhere except the output directory** — The agent must never modify source code, configurations, environment files, or databases. No commits, no pushes, no writes of any kind outside the output directory configured in Step 0.
2. **Worst-finding title** — The SAR filename and report heading must always be derived from the highest-scoring finding in the assessment. This ensures that the most critical vulnerability is immediately visible from the filename alone, without opening the report. See [output format](frameworks/output-format.md) for the derivation rules.
3. **Vulnerabilities registry** — Every SAR generation must create or update `vulnerabilities.csv` in the output directory — a persistent CSV registry of all findings (11 columns, sorted by status group then Score descending). New findings are added with `Status: Pending`. Rows are **never deleted**. The agent **never** modifies `Mitigation Date`, `Assignee`, or any `Status` that is not `Pending` — the full lifecycle (`Pending` → `In Development` → `Processing` → `In QA` → `In Staging` → `Mitigated`) is team-managed. Findings with `Status: Mitigated` in the CSV must appear in the SAR under a dedicated `## Mitigated Findings` section with the `[MITIGATED]` label. See [output format](frameworks/output-format.md) for the full CSV schema and mitigated findings presentation.
4. **Reachability before scoring** — Every finding must be traced through the full execution flow before a criticality score is assigned. A vulnerability that is unreachable from any network-exposed surface cannot score above 40.
5. *