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It’s becoming increasingly clear that video by itself will soon no longer be reliable evidence. How long before it becomes a plausible criminal defence to say
by jl6 6y ago
It’s becoming increasingly clear that video by itself will soon no longer be reliable evidence.
How long before it becomes a plausible criminal defence to say “the CCTV must have been deepfaked, that’s not me”?
The indicator of reliability will be the chain of custody of the video data.
- freyr 6y agoThis is one of those technologies where I struggle to think of beneficial use cases, but my mind fills with ways this could abused. That's not to say it shouldn't be researched, or people more creative than me won't think of beneficial use cases.
- jaggirs 6y agoThis whole post is a beneficial use case of deepfake-ish tech.
- freyr 6y agoAnd that is what, exactly? From the abstract: "Our system can generate novel points between professional tennis players that resemble Wimbledon broadcasts, enabling new experiences such as the creation of matchups between players that have not competed in real life, or interactive control of players in the Wimbledon final." I don't believe academic researchers needs to justify their work by providing real life applications. But if that were the extent of deepfake's utility, I'd be underwhelmed.
- hobofan 6y agoNot sure if the deepfaking here is necessary step, but I think it could be useful towards creating humanoid robot assisted tennis training.
- pawelmurias 6y agoInteractive deep faking of real people in video games seems insanely impressive at least to me. What more could you expect?
- tux1968 6y agoEducation and entertainment use cases abound.
- freyr 6y agoYes, simulating real people for entertainment value seems to be the primary use case at this point. I'm just unsure that the value tradeoff between "simulating real people for entertainment" and "simulating real people for fraud, propaganda, misinformation, etc." is in our favor. It's inevitable, we'll just need to adapt. I recently lost my dog. The idea of interacting with a virtual model of her to help ease the grief is interesting and scary, and ripped straight from a Black Mirror episode.
- pytmand 6y agoYour comment about your dog reminded me of this: https://www.youtube.com/watch?v=uflTK8c4w0c https://www.youtube.com/watch?v=uflTK8c4w0c A mother meeting her dead daughter again through VR. It's a video that fills me with all sorts of emotions. It feels so wrong but at the same time it is very touching and beautiful.
- Tepix 6y agoThink about stuntmen who risk their lives.
- nmca 6y agoI don't think it's too unlikely that the cost of producing the CGI for a film like "The Avengers" could go from ~1e7 USD to ~1e3 USD over the next ~10 years. Seems like that could have some creative uses.
- person_of_color 6y agoCan real video include some signature that cant be faked?
- arketyp 6y agoI wonder what cryptography can contribute with here. Could sensor manufacturers integrate a private key in the video stream which would authenticate an unbroken chain of frames?
- red0point 6y agoNo need to think that far. Just calculate the hash of the video file stored on camera (or segments of it during e.g. live stream) and authenticate this using a private key stored in a secure element on the camera. Do you trust this secure element enough (see the breach of Intel’s CPU Private Keys via SpecEx, maybe you can do so by loading a custom firmware as well?). Assume the secure element is in fact secure, the issue then, as with any public/private key scheme, lies with establishing trust of the keypair. Do you trust the manufacturer that he will not be breached? And more pressing even; How do you prevent someone modifying their internal camera video stream such that they may send any data to the authentication chip/mechanism? And if all this is implemented, it can be done even more low level - just direct the camera e.g. to your screen (I assume solutions would then crop up to increase the fidelity of such a solution). I am not saying such a solution would not provide ANY benefits, I am just pointing out that these issues prevent it from becoming a silver bullet.
- person_of_color 6y agoWhere did you learn about cryptographic systems? Less about the algorithms, but more about designing applications of cryptographic primitives?
- Tepix 6y agoCameras that digitally sign pictures have been around for a while. They have also been cracked already (back in 2010: https://www.elcomsoft.com/news/428.html https://www.elcomsoft.com/news/428.html ) I haven't seen any cameras that digitally sign videos as well. Sounds doable. However the secret signing key will have to reside inside the camera in a way that a determined attacker cannot extract it. Sounds hard.
- gamblor956 6y agoThe indicator of reliability has always been the chain of custody. Video must be authenticated by an appropriate witness before it can be introduced as evidence.
- hyperbovine 6y agoWell, there was a criminal justice system before CCTV. I imagine we’ll find a way.
- freyr 6y agoThere was a criminal justice system before fingerprint and DNA analysis too. It was just a worse, less reliable system.
- myself248 6y agoI believe this was the plot of Michael Crichton's _Rising Sun_ (1992).
- joshspankit 6y agoThis is, I feel, one of the truly beneficial uses of blockchain technology: storing media hashes as they are recorded so that they can be authenticated later.
- glitchdout 6y agoYou should watch The Capture :) https://www.imdb.com/title/tt8201186/ https://www.imdb.com/title/tt8201186/