Attendance at a Black Hat hackers conference in Las Vegas went “through the roof” when the first Hackers for Hillary gathering was convened on Wednesday. Organizers said that when Donald Trump called on Vladimir Putin to help find Hillary Clinton’s “missing” emails late last month, he angered the wrong group of people. “Maybe 12 people had RSVP’d until then,” said Jake Braun, chief executive of Cambridge Global Advisors. “It went through the roof after that. It really helps when you have Donald Trump giving Russia a pass on hacking our democracy.”