reviewing-detection-rules-for-evasion SKILL.md skillA
reviewing-detection-rules-for-evasion 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/reviewing-detection-rules-for-evasion@git:20260821.4f2a732Pins git:20260821.4f2a732 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- unboundcompute/security-agent-skills
- Path
skills/reviewing-detection-rules-for-evasion/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260821.4f2a732, committed Aug 21, 2026
- Size
- 8,869 bytes
- Repository stars
- 26
- License
- MIT
Stress detection-as-code rules the way an attacker who has read them would: a rule keyed on one literal spelling of an action that a casing, quoting, whitespace, path, flag-ordering, or encoding variant slips past, a left-anchored or misplaced-wildcard match defeated by added noise, an exclusion or allowlist keyed on a field the attacker sets, and a rule over telemetry the log source never actually emits. Covers matching the spelling instead of the behavior, anchor and wildcard placement…
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
# Reviewing detection rules for evasion: whether the rule survives an attacker who reads it A detection rule is a guard, and like any guard it is only as strong as the exactness of the thing it checks against what the attacker can vary. Detection content is often written to match one observed spelling of an attack: a specific command line, a known tool name, a particular flag. An attacker who can read the rule, or simply reason about it, expresses the same action a different way and walks past. This review treats a rule the way an attacker treats a filter: find the field it trusts, find the variant it does not cover, and produce an event that does the malicious thing without tripping the match. The attacker-controlled field is the source, the rule's match logic is the guard, and a bypass is the bug. ## When to use - You maintain detection-as-code rules and want to know which are brittle before an attacker does. - Rules match on attacker-controlled fields: command lines, arguments, user-agents, paths, names. - You are reviewing or threat-modeling existing detections, not writing new ones. ## Scope check …
Read the whole file at its exact version.
How to install
mdr add unboundcompute/security-agent-skills/reviewing-detection-rules-for-evasion@sha256:591875908a6ad866The line at the top of this page pins the label git:20260821.4f2a732, 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_zhgdhhxnkkdqufmi)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Aug 21, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8869 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
unboundcompute/security-agent-skills · 26 stars · license MIT · pushed 2026-09-08 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_zhgdhhxnkkdqufmi GET https://markdownregistry.com/api/v1/resolve?ref=unboundcompute/security-agent-skills/reviewing-detection-rules-for-evasion GET https://markdownregistry.com/api/v1/blob/591875908a6ad8667349053014c4000d3b1ff4555b87cc6e721fdea62a83b2b1
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.