A school division in south Winnipeg says it's wrapped up an investigation into a cyberattack last year that led to nearly 1 million files, and the personal data of students, staff and families, being leaked into the dark web.

A spokesperson with the division said in an email its review of the leaked data wrapped up on Nov. 26, and final notices were sent to those affected on Wednesday .

"We identified backups of our student information system database, excerpts from our staff payroll database, student and staff storage files from 12 schools, and division administrative documents among files taken," the spokesperson said.

A hacker group attacked the school last December and then tried to sell the information for over $1 million in bitcoin. The group released the information on the

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