Story perspectives

Experts Urge Enhanced Security for Microsoft Exchange Servers

10/31/2025

Summary

Story summary

U.S. Cybersecurity and Infrastructure Security Agency (CISA), the National Security Agency (NSA), and international partners released guidance to secure on-premises Microsoft Exchange servers amid rising threats after older versions lost support.
The guidance recommends multi-factor authentication and restricting administrative access.
It urges migration to supported versions, such as Exchange Server Subscription Edition (SE).
It also calls for regular security updates and robust encryption to protect communications.

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Story summary

U.S. Cybersecurity and Infrastructure Security Agency (CISA), the National Security Agency (NSA), and international partners released guidance to secure on-premises Microsoft Exchange servers amid rising threats after older versions lost support.
The guidance recommends multi-factor authentication and restricting administrative access.
It urges migration to supported versions, such as Exchange Server Subscription Edition (SE).
It also calls for regular security updates and robust encryption to protect communications.