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By Dave Millier / November 04, 2026

Fake "IT" Calls and Teams Messages Breached 4 Canadian Law Firms. Could It Happen in Your Chat Tools?

In late October 2026, attackers phoned employees at some of Canada's largest law firms and said they were from the firm's IT department. They described an expired password or a critical software update, then sent each employee to a fake sign-in page. At least 4 firms were breached: McCarthy Tétrault, Davies, Bennett Jones, and Borden Ladner Gervais. At least 7 employees gave the attackers access, and many of the calls came through Microsoft Teams or appeared to come from the IT department's own number (Source: The Globe and Mail).

Fake "IT" Calls and Teams Messages Breached 4 Canadian Law Firms. Could It Happen in Your Chat Tools?