CDK Global 's reputation continues to face challenges in the wake of two cyberattacks June 19, with news the situation could last beyond June 30 and that lawsuits have already been filed. CEO Brian MacDonald is defending the company's response. In a statement issued exclusively to Crain's sister brand Automotive News — his first public remarks since the attacks — MacDonald said he and the Hoffman Estates-based company are working to manage the situation and bring its dealership management system back online.