Hackers infiltrated the Trump campaign and made off with sensitive documents, a major breach that is now under investigation by the FBI. The ordeal is reminiscent of the 2016 election, when Russian hackers hit the campaign of then-Democratic nominee Hillary Clinton. Michael Kaiser is the CEO of Defending Digital Campaigns, a nonpartisan organization that provides campaigns with cybersecurity software. On POLITICO Tech, Kaiser tells host Steven Overly why these risks persist even as campaigns get savvier about cybersecurity.