A hacking group claims to have breached software company CDK Global and is demanding a ransom of tens of millions of dollars, according to a report by Bloomberg. CDK, a provider of software to car dealerships in North America, is in discussions to pay the ransom, although this could change. The hackers are believed to be based in eastern Europe. The cyberattack has caused a three-day outage of CDK's systems, disrupting operations at thousands of car dealerships. The company has shut down most of its systems as a precaution and is working with experts to assess the impact. CDK Global, which works with over 15,000 retail locations, offers cybersecurity measures to prevent and respond to cyberattacks. Customers are still experiencing issues with CDK systems as the company works to restore normal operations.