Microsoft says admins should remove some previously recommended antivirus exclusions for Exchange servers to boost the servers' security. As the company explained, exclusions targeting the Temporary ...

Update, August 10, 2025: This story, originally published on August 7, has been updated with additional information following a demonstration of the shared service principal exploit at the Black Hat ...

Parts of the federal enterprise are likely susceptible to the flaw that allows hackers to hijack on-premises versions of Active Directory. CISA plans to release an emergency directive on Thursday, ...

Microsoft is investigating an ongoing outage preventing Outlook on the web users from accessing their Exchange Online mailboxes. According to thousands of user reports on DownDetector, the issue ...