John McAfee, the pioneer creator of popular computer antivirus software, has died behind bars in a Spanish prison. He was 75. McAfee was found dead on Wednesday afternoon in his cell in Brians 2 Prison in Barcelona, with officials saying that the early investigation points to a suicide, the Catalan justice department said, confirming an earlier report from El Mundo newspaper. It came just hours after a Spanish court approved McAfee's extradition to the United States, where he is wanted on tax-related criminal charges that carry a prison sentence of up to 30 years. McAfee had been held in Spanish...