Sources: US car dealership software provider CDK Global appears to have paid ~$25M to hackers on June 21, after a ransomware attack shut down its systems (Sean Lyngaas/CNN)

Sean Lyngaas / CNN:
Sources: US car dealership software provider CDK Global appears to have paid ~$25M to hackers on June 21, after a ransomware attack shut down its systems  —  CDK Global, a software firm serving car dealerships across the US that was roiled by a cyberattack last month, appears to have paid …