accessnow.org

the GOOD, BAD, and UGLY of photo & video

METADATA

File's Metadata

  • Metadata is not what you see upon taking a picture, but rather the footprint that's left behind.
  • File’s metadata, exists within the file.
  • Those metadata can be erased and edited.

the GOOD

  • They are all beneficial as long as they stay on your machines.
  • Provide you with numerous information about a file.

the BAD

  • Things gets murky once you upload/share a file.
  • Possible use of your metadata :
    • Commercial use by extracting the device’s fields.
    • Identity finding by extracting author’s fields.
    • Location tracking possibility.

the UGLY

  • What if the server, not only used your metadata but also changed them?
  • Demonstration :
    • exif-tool before and after uploading a file.
    • diff the two results.

Prevention and solutions

Credits