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Pacemaker hack can deliver deadly 830-volt jolt


Pacemakers from several manufacturers can be commanded to deliver a deadly, 830-volt shock from someone on a laptop up to 50 feet away, the result of poor software programming by medical device companies.
The new research comes from Barnaby Jack of security vendor IOActive, known for his analysis of other medical equipment such as insulin-delivery devices.
Security researcher Barnaby Jack of IOActive revealed new research on Wednesday that showed pacemakers from several manufacturers can be commanded to deliver a deadly, 830-volt shock from someone on a laptop up to 50 feet away, the result of poor software programming by medical device manufacturers.
Image credit: Breakpoint
Jack, who spoke at the Breakpoint security conference in Melbourne on Wednesday, said the flaw lies with the programming of the wireless transmitters used to give instructions to pacemakers and implantable cardioverter-defibrillators (ICDs), which detect irregular heart contractions and deliver an electric shock to avert a heart attack.
A successful attack using the flaw "could definitely result in fatalities," said Jack, who has notified the manufacturers of the problem but did not publicly identify the companies.
In a video demonstration, Jack showed how he could remotely cause a pacemaker to suddenly deliver an 830-volt shock, which could be heard with a crisp audible pop.
As many as 4.6 million pacemakers and ICDs were sold between 2006 and 2011 in the U.S. alone, Jack said. In the past, pacemakers and ICDs were reprogrammed by medical staff using a wand that had to pass within a couple of meters of a patient who has one of the devices installed. The wand flips a software switch that would allow it to accept new instructions.
But the trend is now to go wireless. Several medical manufacturers are now selling bedside transmitters that replace the wand and have a wireless range of up to 30 to 50 feet. In 2006, the U.S. Food and Drug Administration approved full radio-frequency based implantable devices operating in the 400MHz range, Jack said.
With that wide transmitting range, remote attacks against the software become more feasible, Jack said. Upon studying the transmitters, Jack found the devices would give up their serial number and model number after he wirelessly contacted one with a special command.
With the serial and model numbers, Jack could then reprogram the firmware of a transmitter, which would allow reprogramming of a pacemaker or ICD in a person's body.

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