FILE - In this July 28, 2010 file photo, Barnaby Jack demonstrates an attack on two automated teller machines during the Black Hat technology conference in Las Vegas. JACK, a prominent

 

              FILE - In this July 28, 2010 file photo, Barnaby Jack demonstrates an attack on two automated teller machines during the Black Hat technology conference in Las Vegas. JACK, a prominent
FILE - In this July 28, 2010 file photo, Barnaby Jack demonstrates an attack on two automated teller machines during the Black Hat technology conference in Las Vegas. JACK, a prominent hacker who discovered a way to have ATM machines spit out cash and was set to deliver a talk about hacking pacemakers and other wireless implantable medical devices, has died in San Francisco. San Francisco Deputy Coroner Kris Barbrich says BJack died on Thursday, July 25, 2013. The Medical Examiner's Office is still investigating the cause of death. (AP Photo/Isaac Brekken, File)