Set Up Secure File Handling

Help me set up secure file handling for my Shopify store:

Store Context:

  Do you sell digital products: [YES/NO]
  Do you accept file uploads from customers: [YES/NO, e.g., custom design files]
  Do you share files with customers post-purchase: [YES/NO, e.g., manuals, warranties]
  File hosting location: [SHOPIFY FILES/EXTERNAL CDN/CLOUD STORAGE]
  Types of files handled: [LIST, e.g., images, PDFs, ZIP archives, design files]


Digital Product Protection:

  Generate unique, time-limited download links for purchased files
  Set maximum download attempts per purchase: [LIMIT, e.g., 3 downloads]
  Set download link expiration: [DURATION, e.g., 72 hours]
  Implement IP-based download restrictions
  Add invisible watermarks to PDFs with buyer information
  Monitor for download link sharing on public forums


Customer File Upload Security:

  Restrict allowed file types: [TYPES, e.g., JPG, PNG, PDF only]
  Set maximum file size limits: [SIZE, e.g., 10MB]
  Scan uploaded files for malware before processing
  Store uploaded files in a secure location separate from public assets
  Sanitize file names to prevent path traversal attacks
  Never execute uploaded files on the server


Internal Document Management:

  Secure storage for business documents (contracts, invoices, compliance docs)
  Access control for internal files (who can view, edit, download)
  Version control for important documents
  Encrypted storage for sensitive files containing customer or financial data


Shopify Files Management:

  Audit files uploaded to Shopify admin (Settings > Files)
  Remove unused or outdated files
  Ensure no sensitive documents are publicly accessible via URL
  Organize files with a clear naming convention


Implementation:

  Recommend a digital downloads app with security features: [BUDGET]
  Provide code for secure file upload forms if applicable
  Set up automated file cleanup for expired downloads


Monitoring:

  Track download patterns for abuse detection
  Alert on unusual download volumes from single accounts
  Regular audit of publicly accessible files: [FREQUENCY, e.g., monthly]