submitted 5 months ago by [email protected] to c/[email protected]

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I was thinking about how hard it is to accurately determine whether a screenshot posted online is real or not. I'm thinking there could be an option in the browser to take a "secure screenshot", which would tag the screenshot with the date, url, and whether the page was modified on your computer. It could then hash both the tag and the image data and automatically upload this hash to some secure server somehow. There would need to be a way to guarantee that only the browser could do this, or at least some way to tell exactly what the source was. I'm not much of a cryptography person, but I would be surprised if it isn't possible to do this. Then, you could check if the screenshot you see is legitimate by seeing if it's hash exists in the list of real hashes.

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[-] [email protected] 3 points 5 months ago

It would actually be convenient to have a screenshot feature that also automatically links to the latest archive of the website

there are situations though where that doesn't work, such as if this can only be seen on your account, like if you take a screenshot of a DM or something

[-] [email protected] 3 points 5 months ago

Without cooperation from whoever owns that service then that's impossible. Ahh and its also impossible if u have e2ee unless u wanna hand over ur private key to some third party.

this post was submitted on 23 Jan 2025

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