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In this article, we unpack how ransomware is changing, how AI is reshaping both offense and defense, and what our latest CSR 2026 data reveals about real-world security concerns.

The Monthly Threat Report by Hornetsecurity brings you monthly insights into M365 security trends, email-based threats, and commentary on current events in the cybersecurity space. This edition of the Monthly Threat Report focuses on data and industry events from the month of November 2025.

Strategic acquisition expands Proofpoint’s global leadership in human- and agent-centric security, deepens commitment to MSP and SMB markets.

Ransomware is resurging, multi-vector campaigns are spreading across identities and SaaS platforms, and gaps in email threat detection and response are being exploited at scale. Learn more about these email threat trends in our article.