> > Other examples in this spirit - you asked for a car with high maximum > speed. You said you don't care much about security ratings. This gets > forwarded to a data broker (look up the term) who sells it to your > insurance company >
Your insurance company, faced with a claim that the well established auto dealership and data brokers are making things up for no obvious reason, would just conclude your denial is a lie and double your insurance costs anyway. > higher prices for others. Having a provable transcript of a > conversation declaring the exact margins and terms would lose that > retailer their contract > Only if it was disclosed. Again the issue seems to be loss of privacy. > Discussing job options. While not having told your boss about your > plans to leave. Sometimes you have very good reasons to not let them > know a thing until after your new job position is secured. > So if your boss finds a highly plausible chat log of you talking to a competitor about working there, you will say "no the chat log was forged by the competitor" and your boss will say, "oh ok, no problem, how could I ever doubt you" ? I think deniability in this case would be unlikely to have any effect. a mean manner. This gets repeated without that context in a chat. The > angry response gets forwarded to some authoritive person who'll > interpret it as the recipient being the one who initiated the fight. > So show the full chat log and turn the tables on the bully. Problem solved. > framed if the transcript gets published and the fingers are pointed at > him (see Snowden, Manning and others), and deniability means it is > nothing but word against word > Manning already used a deniable chat medium and was hosed anyway, despite being somewhat technically proficient. For deniability to have any real world effect, there'd need to be a LOT of people forging chat logs pretty routinely. As it's only relevant when there's some breakdown in privacy, and that should hopefully be rare in a good cryptographic system, getting people to routinely forge or edit logs seems .... hard.
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