Brandon Sun By: David Paddon, The Canadian Press Posted: Last Modified: 4:15 PM CDT Wednesday, Mar. 17, 2021 TORONTO - Canada's main cybersecurity watchdog said Wednesday that it's likely too late to prevent criminals from using a vulnerability in Microsoft Exchange email servers, unless system administrators have already installed software patches that were issued in early March. The Microsoft company logo is displayed at their offices in Sydney, Wednesday, Feb. 3, 2021. THE CANADIAN PRESS/AP-Rick Rycroft TORONTO - Canada's main cybersecurity watchdog said Wednesday that it's likely too late to prevent criminals from using a vulnerability in Microsoft Exchange email servers, unless system administrators have already installed software patches that were issued in early March.