Blue Cross of Idaho announced to have suffered a data breach, hackers accessed to the personal information of about 5,600 customers. Blue Cross of Idaho announced suffered a data breach that might have exposed the personal information of about 5,600 customers (out of a grand total of 560,000 health insurance customers), including their names, subscriber or enrollee numbers, dates of service, provider names, patient account numbers, claims number and payment data, and procedure codes.