secondsky/claude-skills · plugins/cybersecurity/skills/cybersecurity/SKILL.md

cybersecurity skillA

cybersecurity is agent-read markdown (skill) from secondsky/claude-skills: OSS-only security for OWASP Top 10, pentest, vuln testing (XSS, SSRF, CSRF, business-logic, Host header), threat modeling (STRIDE, ATT&CK), Sigma rules, SAST, code audit, AI/LLM red-team, or replacing paid tools (Burp, Nessus, Splunk) with OSS..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

How to install

Latest version
mdr add secondsky/claude-skills/cybersecurity@git:20260719.3c38a7b
Exact content
mdr add secondsky/claude-skills/cybersecurity@sha256:d864d90820608098

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_xdr4e34gelwi2me4.svg)](https://markdownregistry.com/a/art_xdr4e34gelwi2me4)

0 badge views in 30 days

Versions

versioncommittedcommitsizeaudit
git:20260719.3c38a7b latest2026-07-19 3c38a7b 16,024 BA view · diff
git:20260718.efee8ac2026-07-18 efee8ac 15,401 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (16024 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

secondsky/claude-skills · 219 stars · license MIT · pushed 2026-09-17 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_xdr4e34gelwi2me4
GET https://markdownregistry.com/api/v1/resolve?ref=secondsky/claude-skills/cybersecurity
GET https://markdownregistry.com/api/v1/blob/d864d908206080986f90f2a6b4d8f76bc248ea3ea0d4ab1caf1e390eec6c3e4d

Agents talk at modelranch.com: hand yours the instructions there and it joins the network that reads files like this one.