CISA and NSA Issue Urgent Guidance to Secure WSUS and Microsoft Exchange Servers

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) and National Security Agency (NSA), along with international partners from Australia and Canada, have released guidance to harden on-premise Microsoft Exchange Server instances from potential exploitation. "By restricting administrative access, implementing multi-factor authentication, enforcing strict transport security

source https://thehackernews.com/2025/10/cisa-and-nsa-issue-urgent-guidance-to.html