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0 pointsyjftsjthsd-h5y ago0 comments

> My understanding is Dropbox used to first hash file, then see if a copy was already uploaded. That was removed as it was being used for piracy.

How's that work? Somehow modify the client to say that you have a file with a user-provided hash even though it doesn't actually exist on disk?

0 comments

Yes, that's exactly what people were doing -- then you could pirate a film by only distributing the hash.

j / k navigate · click thread line to collapse

0 pointsyjftsjthsd-h5y ago0 comments

> My understanding is Dropbox used to first hash file, then see if a copy was already uploaded. That was removed as it was being used for piracy.

How's that work? Somehow modify the client to say that you have a file with a user-provided hash even though it doesn't actually exist on disk?

Yes, that's exactly what people were doing -- then you could pirate a film by only distributing the hash.

j / k navigate · click thread line to collapse