To exploit the vulnerability, an attacker would need either system access or be able to convince a user to open a malicious ...

Microsoft released patches for CVE-2026-21509, a new Office zero-day vulnerability that can be exploited to bypass security features.

This emergency zero-day patch blocks attackers from slipping past built-in protections and compromising your system.

Microsoft suggests the threat is being used in phishing attacks against vulnerable systems since successful exploitation ...

Microsoft experienced a major outage on January 22 that affected Outlook, Teams, 365 and more. Here's what happened.

Microsoft services were abused in a new phishing campaign that targeted energy firms using malicious SharePoint links.

Extended support for Office 2016 and Office 2019 ended on October 14, 2025, and we'll no longer provide security updates. Upgrade to Microsoft 365 to avoid security risks and supercharge your ...

Microsoft Defender Researchers uncovered a multi‑stage AiTM phishing and business email compromise (BEC) campaign targeting ...