Car dealers crippled by cyberattack ABC NewsRipple effect from CDK hack widens as more US auto dealers flag hit Yahoo FinanceWith Pen and Paper in Hand, Car Dealers Improvise as Cyber Outage Persists The Wall Street JournalGroup 1 Automotive says CDK cyberattack has disrupted some U.S. operations MarketWatchAutoNation, Sonic Warn of Financial Impact From CDK Hack (SAH, PAG, GPI, AN) Bloomberg