Nissan Canada Finance says it has been the victim of a data breach that may have involved the personal information of some customers who financed their vehicles through the automaker.

The company says it does not know precisely how many people were affected, but that it was contacting all of its roughly 1.13 million current and previous customers.

It says it is still investigating what personal information has been impacted, but that it became aware of the unauthorized access on Dec. 11.

The company says the breach may have involved access to the personal information of customers who financed their vehicles through Nissan Canada Finance and Infiniti Financial Services Canada.

The unauthorized access may have included customer names, addresses, vehicle makes and models, vehicle identification numbers, credit scores, loan amounts and monthly payments.

Nissan Canada Finance is offering all of its customers 12 months of credit monitoring services through TransUnion. It also says it has contacted Canadian privacy regulators, law enforcement and data security experts to help investigate.

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