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

Microsoft has released an emergency out-of-band security update for Windows Server to address a probable remote code ...

An out-of-band (OOB) security update that patches an actively exploited Windows Server Update Service (WSUS) vulnerability has broken hotpatching on some Windows Server 2025 devices.

Researchers say hackers could be gathering intelligence for future attacks, and authorities warn users to apply patches and ...

Microsoft has released a security update to address a critical remote code execution vulnerability impacting multiple versions of Windows Server Update Services that was not fully eradicated by a ...

Microsoft says the ESU program is "not intended as a long-term solution but rather as a temporary bridge to stay secure while one migrates to a newer, supported platform."  Windows security ...

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

Microsoft recently pushed an emergency patch to fix a “deserialization of untrusted data” vulnerability found in Windows ...