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