HALIFAX - The president and chief executive officer of Nova Scotia Power says a Russia-based actor is likely behind a cybersecurity breach that targeted the utility's customers in April.

"This incident was an unprecedented, sophisticated and targeted attack," Peter Gregg told a committee of the Nova Scotia legislature in prepared remarks on Tuesday. "Based on expert assessments and intelligence, there is a high degree of confidence that the activity was closely associated with a Russia-based threat actor group."

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