The Chicago Yacht Club, which counts many high-profile business leaders among its members, said its computers were hacked and that outsiders may have compromised members’ name, address and credit information.
The club’s most affluent business leaders include insurance mogul Pat Ryan and Chicago Blackhawks owner Rocky Wirtz, as well as some of the Walgreen family.
The club’s computers crashed on June 15, prompting an investigation into the computer system.
According to Crain’s Chicago Business, malware may have been installed on one of the club’s servers. In a letter written by Commodore Gerald Bober to the club’s members, Bober states the server involved contained information on membership, but it was not the one used by members to pay bills online.
The club says it is rebuilding its server as a result of the breach.