His death was confirmed by his employer, security firm
Jack's death comes days before the opening of the Black Hat hacking convention in
Jack was known for impressive public hacking demonstrations that made him a sought-after presenter at computer-security conferences.
In 2010, at the annual Black Hat security conference in
Previously he had demonstrated a security flaw in an insulin pump that allowed him to hack the device from as far as 300 feet away, forcing it to dispense the hormone.
He was expected to give another medical-device presentation next week.
In an interview last week, Jack said he would show he could scan from a distance of as far as 30 feet for a certain model of pacemaker and defibrillator -- he would not identify the model -- override its software and send high-voltage shocks to the device, causing it to stop working.
"We have lost a member of our family," Ford said in a statement. "Everyone would agree that the life and work of
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