Skip to content
cccskills
FreePublished on GitHub

detection-engineering

Detection engineering skill for writing, testing, and tuning Sigma, YARA, YARA-L, Suricata, Snort, Zeek, KQL, SPL, EQL, Chronicle, and Elastic detection rules. Covers ATT&CK coverage mapping, telemetry gap analysis, false-positive tuning, detection-as-code pipelines, and validation with Atomic Red Team and Caldera. Use to design durable detections backed by tests.

The English summary is being prepared. Showing the original description.

Garyson26/Trident-SecOps-Skills
See how to install

Files included (2)

  • SKILL.md2.3 KB
  • agents/openai.yaml243 B

SKILL.md (original)

Review the instructions the agent will receive before you install.

Detection Engineering

Operating Rules

  • Start from a threat behavior, not a single IOC. Rules expire; behaviors persist.
  • Every rule ships with: hypothesis, data source, ATT&CK mapping, false-positive notes, response action, and a test.
  • Tune for analyst time, not raw event volume. A noisy critical is a broken critical.

Authoring Workflow

  1. State hypothesis: actor, technique, observable, data source, confidence.
  2. Identify telemetry: process, file, registry, network, auth, cloud, email, identity, EDR fields.
  3. Draft rule in the platform's native DSL; keep selectors readable; comment non-obvious filters.
  4. Generate matched and unmatched test events; run in a dry-run pipeline.
  5. Validate with Atomic Red Team / Caldera tests; record true positive evidence.
  6. Tune: add allow-lists with reasons and review dates; never silently broaden.
  7. Ship with a runbook: triage steps, expected next queries, containment.

Coverage Strategy

  • Maintain a matrix of ATT&CK techniques × data sources × rule IDs × last-tested date.
  • Track gaps as backlog items with prerequisite telemetry (e.g., enable Sysmon 1/3/10/11).
  • Score detections on durability, fidelity, and response cost.

Output Contract

  • rules/<platform>/<id>.yml with metadata block.
  • tests/<id>/ with positive and negative pcaps, EVTX, or JSON.
  • coverage.csv: ATT&CK × rule × status × last_validated.
  • runbooks/<id>.md: analyst playbook.
  • release-notes.md: what changed, why, expected volume delta.

Example: Sigma skeleton

title: Suspicious encoded PowerShell
status: experimental
logsource:
  product: windows
  category: process_creation
detection:
  selection:
    Image|endswith: '\\powershell.exe'
    CommandLine|contains: ' -enc '
  condition: selection
falsepositives:
  - admin scripts, SCCM
level: medium

KQL equivalent (untested):

DeviceProcessEvents
| where FileName =~ "powershell.exe"
| where ProcessCommandLine has " -enc "

Reviews

No reviews yet. Tell others what you thought.

Comments

No login needed. Share how it worked for you, ask a question, or note where it did not run.

No comments yet. Be the first to write one.

Comments are published right away. Do not include personal information such as email addresses or phone numbers. Up to 2 URLs.

0 / 1,000 characters

This form is protected by reCAPTCHA, and the Google Privacy Policy and Terms of Service apply.

More skills from this repository

ai-redteam

Free

AI and LLM red-teaming skill for evaluating prompt injection, jailbreak, data exfiltration, tool abuse, agent hijack, RAG poisoning, model denial of service, and unsafe tool-use chains in Gemini, Claude, GPT, and open-weight models. Use to build evaluation harnesses, attack corpora, defensive guardrails, and red-team reports for AI systems you own or are authorized to test.

The English summary is being prepared. Showing the original description.

Garyson26/Trident-SecOps-Skills26Updated Sep 30, 2026

api-security-automation

Free

API security automation skill for REST, GraphQL, gRPC, and WebSocket APIs. Covers OpenAPI/AsyncAPI ingestion, authenticated fuzzing, OWASP API Top 10 (BOLA, BFLA, mass assignment, SSRF), schema diffing, GraphQL introspection abuse, JWT and OAuth misuse, rate-limit and replay testing. Use to automate API assessments with safe, scoped, evidence-backed findings.

The English summary is being prepared. Showing the original description.

Garyson26/Trident-SecOps-Skills26Updated Sep 30, 2026

assembly-programming

Free

Assembly programming and low-level debugging skill for reading, writing, explaining, optimizing, and reviewing assembly across x86, x86-64, ARM, AArch64, RISC-V, calling conventions, ABI boundaries, inline assembly, disassembly, stack frames, registers, and binary-level behavior. Use for .s/.asm files, compiler output, reverse-engineering snippets, low-level performance, and crash analysis.

The English summary is being prepared. Showing the original description.

Garyson26/Trident-SecOps-Skills26Updated Sep 30, 2026

bug-bounty-workflow

Free

Bug bounty workflow skill for program scope mapping, recon-to-report automation, deduplication against prior submissions, and high-signal reporting on HackerOne, Bugcrowd, Intigriti, YesWeHack, and self-hosted programs. Use to organize bounty work end to end while staying inside program rules.

The English summary is being prepared. Showing the original description.

Garyson26/Trident-SecOps-Skills26Updated Sep 30, 2026

claude-mythos-emulation

Free

Assistant-behavior design skill for approximating a Claude-like analytical, careful, conversational style without claiming to be Claude or Anthropic. Use when the user asks to duplicate, emulate, adapt, or recreate a Claude-style "mythos" or persona for prompts, agent specs, writing style, reasoning discipline, safety posture, or UX behavior.

The English summary is being prepared. Showing the original description.

Garyson26/Trident-SecOps-Skills26Updated Sep 30, 2026

cloud-security-automation

Free

Cloud security posture skill for AWS, Azure, GCP, and multi-cloud. Covers IAM least-privilege, key and secret hygiene, network exposure, data protection, logging coverage, IaC scanning (Terraform, CloudFormation, Bicep, Pulumi), CSPM remediation, and landing-zone hardening. Use for misconfig discovery, IaC review, and automated drift-and-fix workflows on cloud accounts you own.

The English summary is being prepared. Showing the original description.

Garyson26/Trident-SecOps-Skills26Updated Sep 30, 2026

See all skills by Garyson26

Report a problem with this skill