(CNN) A data breach at the California Department of Motor Vehicles may have exposed some drivers' Social Security number information to seven government entities, according to the DMV.

The breach affects about 3,200 individuals over at least the last four years, the agency said in a statement.

The DMV insists it was not hacked and information was not shared with private individuals or entities.

CNN has not yet confirmed which agencies received the DMV data.

The information was improperly disclosed through the Government Requester Code Account Program, which allows government agencies to access information on file with the DMV and is "permitted only for limited purposes under state and federal law."

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