Andrew Left, pictured right, leaving court in Los Angeles on Tuesday. Dania Maxwell/Bloomberg/Getty Images Andrew Left's defense argued he exposed fraud at Namaste Technologies during his trial. Left's lawyer suggested the government went after him for being a "whistleblower of the fraud." Left is accused of market manipulation. The defense says he shared his honest opinions. Andrew Left's defense played offense during his securities fraud trial on Friday, pressing a federal official on why th