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It's surprising how much schadenfreude there's been around this. I don't know much about Matonis, but is seems like a lot of people had very little respect for him.
I'd derive amusement about something like this no matter who it happened to. Even if it were myself! No harm, no foul. OTOH, it becomes a bit criminal depending on what that binary does. I assume that the attacker would stay out of the kitchen if he (most likely 'he') cannot stand the heat, and I'll enjoy it even more if he get's caught.
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FWIW, this is IMO yet another somewhat valuable illustration of just how difficult it can be to maintain control of one's data these days, and that really needs to be a factor in being realistic about crypto-currency design.