Sg Deceptive Reachability Auditor
Audit a fleet of AWS security groups for the multi-hop lateral-movement path that no single ingress rule reveals. Builds a directed reachability graph from the SG-to-SG references (an ingress rule on SG B naming SG A means a host in A can reach B), adds an internet edge for every 0.0.0.0/0 rule, then composes those edges into the transitive closure from a named entry point (the internet, or a compromised host). Reports the shortest reachable path to the crown-jewel tier, the blast radius, and any pivot/hub SG that bridges otherwise-isolated regions, each ranked by severity with a fix. Its discipline is symmetric: on a segmented or orphaned fleet where the chain does NOT reach the crown jewel, it reports clean and names the boundary instead of fabricating a path. Then it states what the SG graph alone cannot answer (live host membership, route tables, NACLs, app-layer auth). Use when asked to review a security-group fleet for lateral movement, blast radius, or whether the internet can reach a sensitive tier. Vendor-neutral; runs offline against describe-security-groups + describe-instances JSON with no Anyshift account.
Security AStatic scan found no risk patternsHow grading works ›
From the source SKILL.md
Reachability-audit skill for a fleet of AWS security groups. Takes the describe-security-groups output for the fleet (plus describe-instances for the instance-to-SG membership), composes the SG-to-SG references into a directed graph, and answers one question a per-rule read cannot: from a named entry point, what can actually be reached, and does any path reach the crown-jewel tier. It returns the shortest path, the blast radius, and any pivot hub, ranked by severity, then names exactly where the SG graph stops being able to answer the question.
What this skill does
Sg Deceptive Reachability Auditor is a community-contributed Claude Code skill in the threat-hunting sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/sg-deceptive-reachability-auditor/ and loads when your prompt matches the skill's trigger.
When to invoke it: Use when asked to review a security-group fleet for lateral movement, blast radius, or whether the internet can reach a sensitive tier. Vendor-neutral; runs offline against describe-security-groups + describe-instances JSON with no Anyshift account.
Who uses this skill
The Sg Deceptive Reachability Auditor Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 161,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).
How to install
Free
Manual install (2 steps)
mkdir -p ~/.claude/skills/sg-deceptive-reachability-auditor
curl -L https://claudskills.com/skills/sg-deceptive-reachability-auditor/SKILL.md \
-o ~/.claude/skills/sg-deceptive-reachability-auditor/SKILL.md
Or just download SKILL.md directly and drop it into ~/.claude/skills/sg-deceptive-reachability-auditor/. Claude Code auto-discovers it on next session.
Skills live at ~/.claude/skills/sg-deceptive-reachability-auditor/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\sg-deceptive-reachability-auditor\SKILL.md on Windows. See the full install guide for step-by-step instructions.
Telegram
📱 Install from your phone or desktop Telegram
Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →
Pro
One-click install via the desktop app
The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.
Pro
For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.
Frequently asked questions
How do I install the Sg Deceptive Reachability Auditor Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy
SKILL.md from the source repository to
~/.claude/skills/sg-deceptive-reachability-auditor/SKILL.md and restart Claude Code. Both flows are detailed at
claudskills.com/install/.
What does the Sg Deceptive Reachability Auditor skill do?
Audit a fleet of AWS security groups for the multi-hop lateral-movement path that no single ingress rule reveals. Builds a directed reachability graph from the SG-to-SG references (an ingress rule on SG B naming SG A means a host in A can reach B), adds an internet edge for every 0.0.0.0/0 rule, then composes those edges into the transitive closure from a named entry point (the internet, or a compromised host). Reports the shortest reachable path to the crown-jewel tier, the blast radius, and any pivot/hub SG that bridges otherwise-isolated regions, each ranked by severity with a fix. Its discipline is symmetric: on a segmented or orphaned fleet where the chain does NOT reach the crown jewel, it reports clean and names the boundary instead of fabricating a path. Then it states what the SG graph alone cannot answer (live host membership, route tables, NACLs, app-layer auth). Use when asked to review a security-group fleet for lateral movement, blast radius, or whether the internet can reach a sensitive tier. Vendor-neutral; runs offline against describe-security-groups + describe-instances JSON with no Anyshift account.
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Sg Deceptive Reachability Auditor skill?
Use Sg Deceptive Reachability Auditor when your Claude Code task falls under the Security category — specifically in the threat hunting area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Sg Deceptive Reachability Auditor" or describe the task and let Claude pick). Browse related skills at
/category/security/.
What is a Claude Code skill and how does the Sg Deceptive Reachability Auditor skill fit in?
A Claude Code skill is a
SKILL.md file that lives under
~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Sg Deceptive Reachability Auditor is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at
/learn/what-is-a-claude-skill/.
Attribution & license
Cite this skill
If you reference this skill in a blog post, paper, or documentation, you can cite it as:
APA
anyshift-io. (2026). Sg Deceptive Reachability Auditor [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/sg-deceptive-reachability-auditor/
BibTeX
@misc{sg-deceptive-reachability-auditor-2026,
author = {anyshift-io},
title = {Sg Deceptive Reachability Auditor [Claude Code skill]},
year = {2026},
publisher = {ClaudSkills},
url = {https://claudskills.com/skills/sg-deceptive-reachability-auditor/}
}Embed this skill
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Security scan
Grade A · scanned 2026-07-26 — free static scan against the OWASP Agentic Skills Top 10.
The scan flagged 1 of 10 categories (network), including lower-severity patterns. Patterns shown inside code fences are weighted as examples rather than instructions — read the grading methodology for what this does and does not guarantee.
- ✓ Prompt injection
- ✓ Data exfiltration
- ✓ Supply chain
- ✓ Reverse shell
- ✓ Credentials
- ✓ Execution
- ✓ Filesystem
- ✓ Persistence
- ✓ Obfuscation
- ⚠ Network
Show this grade on your repo (click to copy):
[](https://claudskills.com/skills/sg-deceptive-reachability-auditor/#security)
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