Microsoft 365 Outage Increases Organizational Risk of Phishing and Support Scams
A global outage affecting Microsoft 365 services, particularly those interacting with Exchange Online and Outlook, is not believed to be due to a cyber attack but poses an elevated security risk. During such outages, cybercriminals are expected to exploit user and organizational confusion by launching targeted phishing campaigns and fake IT support scams, attempting to gain access to corporate systems. Security teams should treat the outage as a security incident, reviewing sign-in activity, mailbox rules, and endpoint behaviors during the outage window since alerts and monitoring capabilities may have been disrupted. Authorities like the Australian National Cyber Security Coordinator caution users to remain vigilant against unsolicited contacts and impersonation scams during these periods of instability. Microsoft remains a highly impersonated brand in phishing attempts, with recent data showing 33% of all brand phishing attacks targeting it in Q3 2026, rising from 23% previously.
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Microsoft 365 Outage Increases Organizational Risk of Phishing and Support Scams
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A global outage affecting Microsoft 365 services, particularly those interacting with Exchange Online and Outlook, is not believed to be due to a cyber attack but poses an elevated security risk. During such outages, cybercriminals are expected to exploit user and organizational confusion by launching targeted phishing campaigns and fake IT support scams, attempting to gain access to corporate systems. Security teams should treat the outage as a security incident, reviewing sign-in activity, mailbox rules, and endpoint behaviors during the outage window since alerts and monitoring capabilities may have been disrupted. Authorities like the Australian National Cyber Security Coordinator caution users to remain vigilant against unsolicited contacts and impersonation scams during these periods of instability. Microsoft remains a highly impersonated brand in phishing attempts, with recent data showing 33% of all brand phishing attacks targeting it in Q3 2026, rising from 23% previously.