The NSA, CISA, Australia's Cyber Security Centre, and Canada's Cyber Centre jointly released comprehensive security practices for Exchange hardening.

The release builds on CISA’s Emergency Directive 25-02 and outlines measures such as restricting administrator access, using ...

Best practices include a focus on hardening user authentication and access, ensuring strong network encryption, and ...

US and allied cyber agencies team up to try to nudge users to pay more attention to securing Microsoft Exchange Server.

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) and National Security Agency (NSA), along with international ...

The best-practices guide comes two months after CISA and Microsoft warned of a high-severity vulnerability in Exchange Server ...

The end is nigh, now get thee to 365 Microsoft will kill Office Online Server next year, creating a headache for anyone using ...

Microsoft has confirmed that the September 2025 security updates are causing Active Directory issues on Windows Server 2025 systems. As the company explains in a Windows release health dashboard ...

Microsoft has reminded that Exchange Server 2016 and 2019 reached the end of support and advised IT administrators to upgrade servers to Exchange Server SE or migrate to Exchange Online. According to ...

Microsoft addresses 167 CVEs in its largest Patch Tuesday to date, including three zero-day vulnerabilities, two of which were exploited in the wild. Microsoft patched 167 CVEs in its October 2025 ...

Schleswig-Holstein has moved from Microsoft Exchange and Outlook to Open-Xchange and Thunderbird for e-mail. Other EU entities have opted for open-source alternatives. This switch isn't just a ...

Microsoft Corp.’s data-center crunch will continue for longer than the company has previously outlined, underscoring the software giant’s struggles to keep up with cloud demand. Many of Microsoft’s US ...