John McAfee, software pioneer turned fugitive, dead at 75

John McAfee, the outlandish security software pioneer who tried to live life as a hedonistic outsider while running from a host of legal troubles, was found dead in his jail cell near Barcelona on Wednesday.

His death came just hours after a Spanish court announced that it had approved his extradition to the United States to face tax charges punishable by decades in prison, authorities said.