KING: Breaking news today on multiple fronts here on the issue of election security. A shorter time ago, the Senate Rules Committee abruptly postponed a vote on a bill addressing election security. A Republican aide said it was called off after concerns at the state level that certain Republicans were reluctant to pass it. Meanwhile, the Democratic National Committee says someone just tried to hack into its voter database. That's according to a party source who says the DNC alerted the FBI after noticing the attempted breach just yesterday. Our Senior Investigative Correspondent Drew Griffin is on top of this story. Drew, tell us what happened.</s>DREW GRIFFIN, CNN SENIOR INVESTIGATIVE CORRESPONDENT: John, all unraveling in the last few days. Sophisticated plot. Easy to understand. Take a look at this site. This is the DNC's vote builder site. This is the legitimate site. The DNC says it was alerted on Monday by a security company out in San Francisco that someone had built an exact, identical site to this in an effort to capture Democrats trying to sign on to the real log site in an effort to capture their sign-ins and logins and get inside the DNC voter database. No indication that happened but the DNC immediately notified the FBI. And the DNC, according to sources, telling Donie O'Sullivan our digital editor today that the DNC is notifying all its state Democratic leaders at a meeting in Chicago that this hacking attempt took place. Very similar to what Microsoft announced yesterday in which Microsoft said Russian actors were behind it. We don't know who is behind this but yet again an example, John, of hackers one way or another using their skills and techniques to try to crack in to the U.S. political system.</s>KING: Another story that continues and continues through. Come back to us when you get more information about this. Appreciate the breaking news reporting. Up next for us here, a Republican congressman indicted for misusing campaign money. Wait until you see the shopping list.
FBI Alerted After "Sophisticated" Hacking Attempt on DNC