U.S. report on Democratic hacking was wake-up call for improved cybersecurity

A man driving a van with diplomatic license plates hands his identification to U.S. special agents outside an estate in the town of Oyster Bay, N.Y., on Long Island on Friday. The compound was one of two the U.S. government closed to Russian diplomats in retaliation for what the Obama administration has said was cyber-meddling in the U.S. presidential election.