0nicell

Exposure Audit — Security skill for Claude Code

Security community

Map your own public exposure using only free, accountless checks.

How to install Exposure Audit

This entry records only its repository, not the path inside it, so there is no exact command to give. Open 0nicell/exposure-audit and copy the folder into ~/.claude/skills/, or the file into ~/.claude/agents/.

What Exposure Audit does

Map your own public exposure using only free, accountless checks. Shows where you appear and how to get removed, never passwords or address data. Ranks a 277-site removal worklist. Companion to data-deletion-skill.

Alternatives in Security

  • Security Ownership Map — Map people-to-file ownership, compute bus factor, and identify risks 14.6k ★
  • Free Code — The free build of Claude Code 8.1k ★
  • Skill Coverage Audit — Trace codepaths in diffs, map against tests, auto-generate missing coverage — use before shipping PRs 2.8k ★

README

Exposure Audit

**Find out where you already are online, before you try to leave.**

Give it your own email, username, domain or GitHub handle. It checks where those show up publicly, ranks the findings by how much damage each one could do, and tells you how to get removed from each.

Companion to [data-deletion-skill](https://github.com/0nicell/data-deletion-skill). That one removes you. This one tells you what there is to remove.

Python · MIT licensed · by [0nicell](https://github.com/0nicell)


What it checks

**Live checks** run automatically. They only look at places that publish *you*, with no account and no scraping:

Check What it finds
Gravatar A public photo and profile tied to your email address
GitHub commit emails Your real address baked permanently into public commits
Handle enumeration The same username across 28 platforms, linking accounts you thought were separate
WHOIS / RDAP Your contact details published for domains you own
Certificate transparency Every subdomain you ever issued a certificate for — staging, admin, client previews
Wayback Machine Contact details you deleted from your site but not from the archive
Have I Been Pwned Which breaches you're in and what was exposed (needs an API key)

**A worklist** is generated from the 314-company registry in data-deletion-skill: every live site, ranked by how much harm it enables, with a working removal contact attached.

Registry  277 live sites to check (37 defunct/contactless)
  CRITICAL  68     breach search + infostealer/threat-intel corpora
  HIGH      65     people search, major brokers, electoral-roll directories
  MEDIUM    96     B2B contact data, OSINT email intelligence
  LOW       48     ad-tech segments, email verification

You get `report.md` and `findings.json`. Hand the markdown to data-deletion-skill and it writes the removal requests.


Setup

git clone https://github.com/0nicell/exposure-au