Clients of county social service programs in 18 Minnesota counties may have had sensitive information stolen, including Social Security numbers, Clay County officials said Monday.
In a notice of the data breach posted to its website Friday, Clay County said it determined in October that data was taken in a ransomware attack on a Clay County electronic document management system it hosts for many other Minnesota counties. An investigation found clients' Social Security numbers, addresses, birth dates, service information and insurance information may have been affected.
Clay County said it is not aware any personal information from the attack has been released or sold. The county said it is taking steps to enhance security in the wake of the incident.