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Canada’s cybersecurity agency said Chinese-backed hackers were likely behind recent malicious activity targeting domestic telecommunications infrastructure, warning that three network devices registered to a Canadian company were compromised in the attacks.

The Canadian Centre for Cyber Security and the US Federal Bureau of Investigation urged Canadian organizations to take steps to harden their networks against the threat posed by Salt Typhoon, a group linked to the Chinese government, in a bulletin issued late on Friday.

“The Cyber Centre is aware of malicious cyber activities currently targeting Canadian telecommunications companies,” the center said. “The responsible actors are almost certainly PRC state-sponsored actors, specifically Salt Typhoon,” it said, referring to the People’s Republic of China.

Separate investigations that revealed overlaps with malicious indicators consistent with Salt Typhoon suggest the cyber campaign “is broader than just the telecommunications sector,” it said.

The hackers will “almost certainly” continue efforts to infiltrate Canadian organizations — especially telecom providers — over the next two years, the agency said.

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