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Re:Tokyo-based cryptocurrency exchange hacked, losing $530M:... by michaelbuckbee on Saturday January 27, 2018 @11:30AM (#16246787)
So you have a case like this: the funds were moved with the private key. 24 hours after the owner comes and says: ‘I didn’t do that! Someone else must have copied my key and made that transaction!’

How does the exchange handle that? What’s the dispute mechanism?

Re:Tokyo-based cryptocurrency exchange hacked, losing $530M:... by aptwebapps on Saturday January 27, 2018 @12:00PM (#16246903)
It's the exchange's own key that is thought to be compromised, not one of their customers'.