Individual skill

deploying-ransomware-canary-files

Deploys and monitors ransomware canary files using Python's watchdog library, placing decoy files mimicking high-value targets (financial records, credentials, database exports) where ransomware enumerates first, and alerting via email, Slack, or syslog on any read/modify/rename/delete. Use for early-warning ransomware detection on file servers, NAS, or endpoints, or to supplement EDR where agents can't be deployed.

skills/deploying-ransomware-canary-files/SKILL.md

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Repository stars (not skill ratings): 35,840
Repository last updated: Aug 31, 2026
License: Apache-2.0

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ai-agents Repository topic
claude-code Repository topic
cybersecurity Repository topic
incident-response Repository topic
mitre-attack Repository topic
penetration-testing Repository topic
red-team Repository topic
security Repository topic
cloud-security Repository topic
malware-analysis Repository topic
ransomware Declared skill tag
canary-files Declared skill tag
watchdog Declared skill tag
detection Declared skill tag
early-warning Declared skill tag
deception Declared skill tag
defense Declared skill tag
finance Derived category
data Derived category
data-databases Derived category

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# Deploying Ransomware Canary Files

## When to Use

- Deploying proactive ransomware detection on file servers, NAS devices, or endpoint systems
- Building an early-warning system that detects ransomware before it encrypts business-critical data
- Supplementing EDR solutions with lightweight canary file monitoring on systems where agents cannot be deployed
- Testing ransomware incident response procedures by simulating canary file triggers
- Monitoring shared drives, home directories, and backup volumes for unauthorized file operations

**Do not use** as a replacement for endpoint protection, backup strategy, or network segmentation. Canary files are a detection layer, not a prevention mechanism.

## Prerequisites

- Python 3.8+ with pip