Skills

Dnr Hunt

Proactive threat hunt over web/application logs, no alert in hand.

Install

npx skills add anthropics/defending-code-reference-harness --skill dnr-hunt -g -a claude-code -y
Category
Security
Updated
3mo ago
License
See repository
Context cost
Mediumabout 3,000 tokens
Runs scripts
No, instructions only

What it does

Proactive threat hunt over web/application logs, no alert in hand. Profiles the corpus, runs a hypothesis-driven hunt loop with a mandatory written ledger, confirms suspects in source, detonates a local PoC, and writes INCIDENTS.json + INCIDENT_REPORT.md. Use when asked to "hunt the logs", "find the campaign", "look for signs of compromise", or "run dnr-hunt". The no-alert entry to the detection & response track; /dnr-respond is the lead-in-hand entry.

dnr-hunt

Proactive threat hunt: logs and source in, incidents out. You start with no alert, the question is "is there anything in here that shouldn't be?" The method is the deliverable as much as the findings: baseline first, then hypothesis → query → pivot, every step in writing, every suspicion confirmed in source and by detonation before it's called real.

Invoke with /dnr-hunt [target-or-logs-dir] [--repo path] [--fresh].

Arguments:

  • $1 = a dnr target directory (contains config.yaml with kind: dnr, e.g. targets/dnrcanary), or a bare directory of log files. Defaults to targets/dnrcanary if it exists, else cwd.
  • --repo = source tree of the application that produced the logs. For a dnr target this defaults to its app/ directory. Without source, no finding can rise above suspected (see the hard rules).
  • --fresh = ignore any checkpoint in the run dir's .dnr-hunt-state/ and mint a new run dir.

Hard rules (these are the skill, do not relax them)

Read the whole SKILL.md on GitHub

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