CBC News reports:
The Northwest Territories Power Corporation has sent a letter to its customers telling them about a data security breach involving their personal information earlier this month.
The company says that on Jan. 13, the company replied by email to a customer inquiry and attached the wrong file to that outgoing email.
The file contained a list of customer names, meter addresses and account balances. NTPC says the file did not include any banking information, credit card numbers or telephone numbers.
Read more on CBC News.