Barnaby Jack could kill a man by computer from 30 feet away, but he never would.
The renowned 35-year-old hacker, who revolutionized bank and medical device security, died on Thursday in San Francisco.
U.S. News 
Isaac Brekken/AP,Isaac Brekken
The Good Hacker: Barnaby Jack Dies
Obit
He could make ATMs spit out cash on demand and kill a man with just a computer, but Barnaby Jack used his powers only for good.
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