Microsoft Teams and Outlook were hit outages - Copyright AFP/File Fabrice COFFRINI Microsoft Teams and Outlook were hit outages - Copyright AFP/File Fabrice COFFRINI ...

Microsoft recently acknowledged a vulnerability affecting its email and calendar service Exchange that could allow an attacker to gain significant control over particular organizations' email servers ...

With the increasing frequency of cyber-attacks on enterprise systems, it is imperative for organizations to ensure that their email servers are secure. Microsoft Exchange Server, being a cornerstone ...

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 has identified one of the critical vulnerabilities in Exchange Server that the company disclosed in February's Patch Tuesday update as actually being a zero-day threat that attackers are ...

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 ...

CISA has issued an emergency directive ordering all Federal Civilian Executive Branch (FCEB) agencies to mitigate a critical Microsoft Exchange hybrid vulnerability tracked as CVE-2025-53786 by Monday ...

Administrators with hybrid Exchange Server environments are urged by Microsoft and the US Cybersecurity and Infrastructure Security Agency (CISA) to quickly plug a high-severity vulnerability or risk ...

"This isn't the worst month of the year so far," said Mike Murray, the director of research at vulnerability management vendor nCircle, even though the vulnerability/patch count is two more than the ...

Microsoft has already issued security patches to cover 81 vulnerabilities affecting Windows, Office, SQL Server, and other Microsoft-based products, including two zero-day holes known publicly, with ...