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by jacobr1
991 days ago
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CAI is roughly the kind of scheme I was suggesting. Thanks for the reference. My take is that proving authenticity might not be something we can do with any degree of accuracy in a general sense. So if that is infeasible, then we need _some_ kind of mitigation. Something like CAI allows us to make the an assessment about the how much trust to give an informational source, probably taking into account multiple factors (known exploits in the source device, reputation of originator and what claims are be attached in the metadata). This might allow me to accept that a given video originated from a local tv station, rather than tiktoker edit, but I still need to asses if that station used genAI or has been compromised or whatever else. But that seems a much narrower reputational problem, that also will be contextual. |
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And I suspect in most cases that is enough - the world runs on trust, so if a reliable source (eg, the NY Times) attests that a photograph is authentic, then we can reasonably trust that. And as you noted, this chain of provenance can go all the way back to the device itself.
Fraud, on the other hand, is much harder to prove without a doubt. It is still a problem, but probably less so in the general case [1]. The concerning thing seems to be extremely targeted attacks, eg, hacking a CCTV to implicate someone in a crime.
[1] Notwithstanding folks who slurp up unfiltered content on, eg, TikTok, but the most outrageous stuff usually doesn't "make the news" on its own without more vetting. If anything, this will reinforce the importance of actual journalism, fact-checking and corroborating evidence.