unboundcompute/security-agent-skills · skills/hunting-tenant-onboarding-and-discovery-abuse/SKILL.md

hunting-tenant-onboarding-and-discovery-abuse skillA

hunting-tenant-onboarding-and-discovery-abuse is agent-read markdown (skill) from unboundcompute/security-agent-skills: Hunt for multi-tenant SaaS onboarding and organization-discovery flows that let an attacker join, claim, or enumerate a tenant they should not: a self-service signup that auto-joins a new user to an existing organization by email domain so anyone with a matching address lands inside it, a domain-claim step that can be satisfied without proving ownership so an attacker claims a domain and its users, an invitation whose token is guessable, reusable, or not bound to the invited address, a tenant-di.

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 unboundcompute/security-agent-skills/hunting-tenant-onboarding-and-discovery-abuse@git:20260903.19a7174
Exact content
mdr add unboundcompute/security-agent-skills/hunting-tenant-onboarding-and-discovery-abuse@sha256:2ed47fcd49458ca8

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_u4zvlyw6x7mobt53.svg)](https://markdownregistry.com/a/art_u4zvlyw6x7mobt53)

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Versions

versioncommittedcommitsizeaudit
git:20260903.19a7174 latest2026-09-03 19a7174 11,632 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 (11632 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

unboundcompute/security-agent-skills · 5 stars · license MIT · pushed 2026-09-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_u4zvlyw6x7mobt53
GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-tenant-onboarding-and-discovery-abuse
GET https://markdownregistry.com/api/v1/blob/2ed47fcd49458ca82e71458829c45cb8efb3234c3b485c66f90859468ae39e17

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