deploying-ransomware-canary-files

# 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 - watchdog library (pip install watchdog) - Write access to directories where canary files will be placed - SMTP server credentials or Slack webhook URL for alerting - Administrative access for placing canaries in system directories ## Workflow ### Step 1: Generate Canary Files Create decoy files with realistic names and content that attract ransomware scanners. Files should have names like `Passwords.xlsx`, `Financial_Report_2026.docx`, `backup_credentials.csv` and contain plausible-looking but fake data. Place them in directories ransomware typically targets first: user desktops, Documents folders, network share roots, and backup paths. ### Step 2: Deploy Filesystem Monitor Use Python's watchdog library with a custom `FileSystemEventH...