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Microsoft Exchange Online Outage: Troubleshooting Access Failures
Microsoft Exchange Online service disruption prevents global users from accessing mailboxes and calendars. Review technical impacts and mitigation steps.
Windows 11 24H2 RRAS RCE: Microsoft Issues OOB Hotpatch Fix
Microsoft releases an out-of-band hotpatch for Windows 11 24H2 to address critical RRAS remote code execution vulnerabilities CVE-2024-43513 and CVE-2024-49053.
Windows 11 C: Drive Access Failure on Samsung PCs - Mitigation Guide
Microsoft investigates an issue where February 2026 Windows 11 security updates prevent C: drive access on Samsung laptops, blocking all applications.
Microsoft Investigates Classic Outlook Sync & Connection Issues
Microsoft is actively investigating widespread classic Outlook desktop client synchronization and connectivity problems impacting users globally.
Storm-2561 Leverages SEO Poisoning for Credential Theft
Microsoft warns of Storm-2561's credential theft campaign using SEO poisoning to distribute fake, digitally signed VPN clients disguised as legitimate enterprise…
Microsoft Patch Tuesday Analysis: Addressing Critical RCE and Quishing
Technical analysis of the March 2026 Patch Tuesday cycle, focusing on Windows RCE, kernel-level privilege escalation, and emerging QR code phishing trends.
CVE-2024-21410: Protect Microsoft Exchange from NTLM Relay Attacks
Deep dive into CVE-2024-21410, a critical privilege escalation vulnerability in Microsoft Exchange. Learn how to detect exploits and implement EPA mitigations.
Microsoft March Patch Tuesday: 84 Flaws Fixed Including Public Zero-Days
Microsoft releases March security updates for 84 vulnerabilities, including 8 Critical flaws and 2 public zero-days. Patch now to prevent RCE and privilege escalation.
Microsoft March Update: 83 CVEs Patched, Prioritization Key
Microsoft's March Patch Tuesday addresses 83 CVEs across its product line. Learn why applying these security updates is crucial for defending against potential…
March 2026 Patch Tuesday: Microsoft Fixes 77 Vulnerabilities
Microsoft's March 2026 Patch Tuesday addresses 77 vulnerabilities across Windows and other software. Learn about the risks and how to prioritize patching.
Microsoft Patch Tuesday March 2026: 8 Critical Vulnerabilities Addressed
Microsoft's March 2026 Patch Tuesday addresses 93 vulnerabilities, including 8 critical issues across various products and 9 in Microsoft Edge (Chromium).
Microsoft Patch Tuesday: 83 Vulnerabilities, Critical Flaw Addressed
Microsoft's latest Patch Tuesday addresses 83 vulnerabilities across its product line, including one critical flaw. Security teams must prioritize immediate patching.
Windows 10 KB5078885 ESU Fixes Two Zero-Days — Patch Guidance
Microsoft releases Windows 10 KB5078885 Extended Security Update to address two zero-day vulnerabilities and a critical system shutdown bug for ESU subscribers.
Entra Passkeys: Phishing-Resistant Windows Sign-In Deployment
Microsoft introduces phishing-resistant passkey support for Entra ID on Windows, leveraging Windows Hello to secure the sign-in process against credential theft.
Microsoft Windows Hotpatching to be Enabled by Default in May 2026
Microsoft will enable hotpatching by default for Intune-managed Windows devices in May 2026, allowing security updates without reboots to reduce downtime.
Microsoft Teams Phishing Deploys A0Backdoor via Quick Assist
Attackers are targeting healthcare and finance employees with Microsoft Teams phishing to deploy A0Backdoor using the native Windows Quick Assist tool.
Microsoft Teams Third-Party Bot Tagging Enhances Meeting Security
Microsoft Teams updates meeting lobbies to identify third-party bots, helping administrators prevent unauthorized data collection and social engineering.
AI-Enhanced Cyberattacks: Microsoft Details LLM Abuse by APT Groups
Microsoft reveals how nation-state actors like APT28 and Crimson Sandstorm are using AI to automate reconnaissance and refine social engineering lures.
Windows Terminal Exploited in ClickFix Campaign for Lumma Stealer
Microsoft identifies a new ClickFix campaign using Windows Terminal to deliver Lumma Stealer. Analysis of social engineering TTPs and mitigation steps included.
Bing AI Promotes Fake GitHub Repositories Spreading Info-Stealers
Microsoft Bing AI search promoted malicious GitHub repositories hosting fake OpenClaw software, leading to info-stealing and proxy malware deployment.
Microsoft Outlook CVE-2025-21418: Mitigating NTLM Relay Attacks
Analysis of CVE-2025-21418 in Microsoft Outlook. Learn how attackers bypass security features to leak NTLM hashes and the steps needed for mitigation.
Credential Abuse Risks: Solving Microsoft Entra ID MFA Coverage Gaps
Examine how coverage gaps in Microsoft Entra ID and Okta MFA implementations allow attackers to exploit valid credentials within Windows network environments.
Sentencing in $24 Million Microsoft Licensing Fraud Scheme
A Florida woman has been sentenced to 22 months in prison for a multi-million dollar scheme involving stolen Microsoft Certificate of Authenticity labels.
APT28 Exploits CVE-2026-21513: MSHTML 0-Day Intelligence
Akamai reports Russia-linked APT28 exploited CVE-2026-21513 in the MSHTML Framework as a zero-day before Microsoft's February 2026 security patch updates.