Email threat landscape: Q3 2026 trends and insights

Reported by Microsoft Security (Microsoft Threat Intelligence and Microsoft Defender Security Research Team)

Summary by Cyber Security News5 Nov 2026, 17:00 CET

About this summary. This is a short excerpt from the description that Microsoft Security published with its article. Cyber Security News did not report or verify the underlying story. Read the original: https://www.microsoft.com/en-us/security/blog/2026/11/05/email-threat-landscape-q3-2026-trends-and-insights/

Spoofed sender domains QR code phishing attacks CAPTCHA-gated phishing tactics Malicious payloads Business contact impersonation Microsoft Teams threats Notable phishing campaigns Defending against email and collaboration threats Hunting queries Indicators of compromise (IOCs) Microsoft Threat Intelligence detected approximately 7.3 billion email-based phishing threats from July through September, including a sharp increase to nearly 3 billion in September alone, up 41% from…

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