Upon receipt kick off worker thread to process digital files.

• explode tar, gz or zip files
• virus scan 
• check for PII (if possible)
  • https://security.virginia.edu/identity-finder

• • https://www.forensicswiki.org/wiki/Bulk_extractor

• create a bag of transferred materials
• send email with details on errors / bag info, etc
  • (need to track bag in db?)