How difficult could it be to attach a keylogger to his computer while he is out for a frappuccino?
Karpeles, after all was extremely intelligent and was ultra-careful about the security issues. And he was in to programming ever since he was just 12 years old. Do you think it will be that easy to steal data from such a person using a keylogger?
I'd rather not comment on his intelligence, however, hardware keyloggers are undetectable even by the most leet hackers. Many have fallen victim to the fbi thanks to hw keyloggers.