4 ms·

> compute a fingerprint locally one downside: i think this could allow a bad actor to directly observe the fingerprinting and assist in developing a method to

• SolarNet 9y ago
  Trusted third parties. That's what is missing from the internet, generally speaking. Services like public notaries. That's kindof what CAs provide. But there are a lot of similar services that could exist for things like this.
• thisacctforreal 9y ago
  Or the attacker could just post the image elsewhere.
  • QML 9y ago
    Or presumably an attacker could just slightly modify the image, and trick whatever CNN Facebook is trying to use into thinking it's not the same photo.
    • Gaelan 9y ago
      …a process which would be much easier given a local copy of the fingerprinting algorithm.