CDK Global has shut down most of its systems around the country as it attempts to assess and contain an early morning cyberattack June 19. "We are actively investigating a cyber incident. Out of an abundance of caution and concern for our customers, we have shut down most of our systems and are working diligently to get everything up and running as quickly as possible," Tony Macrito, CDK's senior director of communications, told Automotive News via email. CDK serves close to 15,000 dealership lo