CISA and NSA Release Guidance for Securing Microsoft Exchange Servers

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) and the National Security Agency (NSA) have issued new guidance to enhance security for Microsoft Exchange Servers amid ongoing cyber threats. This advisory follows an emergency directive from August 2025 regarding a critical vulnerability (CVE-2025-53786) affecting the servers, emphasizing the need for organizations to adopt best practices to mitigate risks.