# Gstack Cso

> Security audit workflow for OPC code, providers, plugins, Electron surfaces, local HTTP bridges, filesystem access, and command execution.

- Skill: `ling71671/gstack-cso` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ling71671/gstack-cso`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ling71671/gstack-cso/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Security
- Author: LING71671 (https://skillmd.com/u/ling71671)
- Updated: 2026-09-10
- Page: https://skillmd.com/skills/ling71671/gstack-cso

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# gstack-cso

Use this skill for a security review with OWASP and STRIDE lenses.

## Scope

Prioritize OPC-specific attack surfaces:

- Electron main/preload/renderer IPC
- Local provider bridges and localhost auth
- API key and token storage
- Plugin, hook, skill, and MCP loading
- Shell command construction and tool permissions
- File reads/writes, path traversal, symlinks, and workspace boundaries
- Prompt injection from web, files, tool output, or plugin content

## Workflow

1. Map the trust boundaries and data flows.
2. Identify assets: secrets, filesystem access, provider credentials, session state, command execution, and user prompts.
3. Review entrypoints that cross boundaries.
4. Test high-confidence concerns with direct code evidence.
5. Ignore speculative issues unless there is a concrete exploit path.

## Output

For each finding include:

- Severity
- Affected file or component
- Exploit scenario
- Evidence
- Recommended remediation

Also include a short "Not Findings" section for checked risks that are already mitigated.