secops-detection-engineering SKILL.md skillA
secops-detection-engineering from googlesandy/secops-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add googlesandy/secops-skills/secops-detection-engineering@git:20260324.1bdc667Pins git:20260324.1bdc667 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- googlesandy/secops-skills
- Path
skills/secops-detection-engineering/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260324.1bdc667, committed Mar 24, 2026
- Size
- 6,957 bytes
- Repository stars
- 13
- License
- none declared
Use when creating, testing, deploying, or managing Google SecOps detection rules — the detection engineering workflow, retrohunts, rule quotas, detection delays, context-aware analytics (entity graph in rules), risk scoring, error troubleshooting, performance optimization, or composite detections. Complements secops-yara-l (YARA-L query syntax) with the detection engineering workflow. Triggers: "create a detection rule", "deploy rule", "retrohunt", "rule not firing", "detection delay…
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
# SecOps Detection Engineering
## Detection Engineering Workflow
```
Write rule (YARA-L) → Test (Run Test) → Retrohunt (historical) → Deploy (Live Rule)
↓ ↓
Non-persistent Generates real
No alerts detections & alerts
```
**See `references/workflow.md`** for full lifecycle, rule management, and quotas.
---
## Testing Approaches
| Method | What it does | Generates alerts? | Persists? |
|---|---|---|---|
| **Run Test** | Runs rule on a specified time range in editor | No | No |
| **Retrohunt** | Applies rule to historical data | Yes (if alerting enabled) | Yes |
| **Live Rule** | Runs continuously on incoming data | Yes | Yes |
**Key testing notes:**
- `Run Test` applies `suppression_window` — suppression is NOT applied during test
- Successive test runs may produce different results (parallel execution, timing differences)
- Test results won't appear in the Rules Dashboard
- For retrohunt on multi-event rules: time range must be ≥ match window size
---
## Run Frequency vs Detection Latency
Choose frequency based on rule type and match window:
…Read the whole file at its exact version.
How to install
mdr add googlesandy/secops-skills/secops-detection-engineering@sha256:5817faf6504c1cf2The line at the top of this page pins the label git:20260324.1bdc667, 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_qtonvpe2hxidphxl)
2 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Mar 24, 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 (6957 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
googlesandy/secops-skills · 13 stars · license none declared · pushed 2026-10-18 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_qtonvpe2hxidphxl GET https://markdownregistry.com/api/v1/resolve?ref=googlesandy/secops-skills/secops-detection-engineering GET https://markdownregistry.com/api/v1/blob/5817faf6504c1cf28d94822a7b5b82688bca6defccd1ad39036e241f069d2d6f
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.