hunting-ios-keychain-and-data-protection-gaps SKILL.md skillB
hunting-ios-keychain-and-data-protection-gaps from unboundcompute/security-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add unboundcompute/security-agent-skills/hunting-ios-keychain-and-data-protection-gaps@git:20260908.e3ae18aPins git:20260908.e3ae18a in mdr.lock. Pin the fingerprint instead.
- Audit grade
- B, 16 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- unboundcompute/security-agent-skills
- Path
skills/hunting-ios-keychain-and-data-protection-gaps/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260908.e3ae18a, committed Sep 8, 2026
- Size
- 10,111 bytes
- Repository stars
- 26
- License
- MIT
Hunt at-rest exposure of secrets on iOS, where a credential, token, or sensitive value is stored with a keychain accessibility class or a data-protection class weaker than it needs, so it is readable when the device is locked, survives into a device backup, or is reachable by another app or after theft, because the item is marked always-accessible, is not restricted to this device, or the file protection lets it be read outside an unlocked session. Use when reviewing how an app stores secrets…
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Hunting iOS keychain and data protection gaps: when a secret is readable while the device is locked iOS gives every stored secret a protection class that decides when and where it can be read: a keychain item has an accessibility attribute, and a file has a data-protection class, and together they say whether the value is available only after the user unlocks the device, whether it is bound to this device alone, and whether it leaves in a backup. Those classes are safe only when each secret carries the strictest one it can tolerate. The gap is a secret stored under a class weaker than it needs: a token marked always-accessible that can be read while the device is locked, a credential not restricted to this device that migrates in a backup to another one, or a file whose protection class lets it be read outside an unlocked session. The bug is not that the secret is stored; it is a protection class that exposes it in a context, locked, backed up, migrated, or post-theft, where it should be unreadable. You hunt these by listing every stored secret and checking the protection class against the context it must survive. ## When to use …
Read the whole file at its exact version.
How to install
mdr add unboundcompute/security-agent-skills/hunting-ios-keychain-and-data-protection-gaps@sha256:99948695bbbe7b1bThe line at the top of this page pins the label git:20260908.e3ae18a, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_rlvmyqsltpnftih3)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 8, 2026.
Audit of the latest version
- fail: No instruction to read or print local credentials (matched: read: a keychain)
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (10111 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 base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Starting a new one? Use a template for SKILL.md on mdpantry, which passes every one of these checks and says what to change in it.
Source
unboundcompute/security-agent-skills · 26 stars · license MIT · pushed 2026-09-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_rlvmyqsltpnftih3 GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/hunting-ios-keychain-and-data-protection-gaps GET https://markdownregistry.com/api/v1/blob/99948695bbbe7b1b5b75a8ad2ac497c2edffce3de43b19ba402361edb2877af2
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.