Microsoft's Post-Quantum Cryptography Acceleration: A 2029 Shift
Microsoft accelerates its post-quantum cryptography (PQC) timeline to 2029, urging security professionals to assess current encryption standards and prepare for…
CVE-2026-33825: BlueHammer Zero-Day in Microsoft Defender Exploited by Ransomware
Analysis of the BlueHammer zero-day, CVE-2026-33825, in Microsoft Defender, actively exploited by ransomware groups. Learn detection and mitigation strategies.
AI Agents Vulnerable to Data Leak via Poisoned MCP Tools
Microsoft warns that malicious tool descriptions for AI agents can lead to stealthy data exfiltration, bypassing security controls by mimicking routine actions.
Microsoft Teams Enhances Meeting Security with New Bot Protection Policy
Microsoft introduces a new admin policy for Teams meetings, preventing unapproved third-party bots from joining, mitigating meeting bombing incidents.
Windows BlueHammer Flaw Exploited by Ransomware Gangs — Patch Now
CISA warns that ransomware gangs are now exploiting the BlueHammer privilege escalation vulnerability in Microsoft Defender to bypass security controls.
Microsoft Pulls 119 Malicious StegoAd Edge Extensions
Microsoft removes 119 Edge extensions linked to the StegoAd campaign, which used steganography in images and fonts to steal credentials and commit ad fraud.
Windows 10 ESU Extended to 2027: Security Implications
Microsoft extends free Windows 10 Extended Security Updates (ESU) for consumers until October 2027. Understand the security implications and planning for end-of-life.
Amadey & StealC Malware C2 Infrastructure Disrupted
Microsoft and global allies dismantle the shared C2 infrastructure of Amadey botnet and StealC info-stealer malware, disrupting ongoing cybercrime operations.
Amadey & StealC Malware Operations Disrupted by Operation Endgame
Operation Endgame, led by Europol and Microsoft, has disrupted infrastructure supporting Amadey and StealC info-stealer malware, impacting cybercriminal services.
Windows 11 KB5095093: New Point-in-Time Restore and Bug Fixes
Microsoft releases KB5095093 for Windows 11 24H2, introducing a critical Point-in-Time restore feature and addressing multiple system-level bugs.
Microsoft AutoGen Studio RCE via AutoJack Flaw — Patch Now
Microsoft patched the AutoJack vulnerability chain in AutoGen Studio, enabling remote code execution through malicious AI agent manipulation.
North Korean Sapphire Sleet Compromises 140+ Mastra AI npm Packages
Microsoft attributes the Mastra AI supply chain attack to Sapphire Sleet (BlueNoroff), involving 140+ malicious npm packages targeting AI developers.
AutoJack: AI Browsing Agents Hijacked for Host RCE via Web Pages
Microsoft researchers reveal AutoJack, a novel exploit chain where malicious web pages hijack AI browsing agents to achieve remote code execution on host systems.
ClickOnce Abuse for Malware Delivery: Understanding the Threat
Explores the new abuse of Microsoft ClickOnce technology for stealthy malware delivery, enabling attackers to bypass traditional security measures and execute malicious…
Defending Against ClickOnce Abuse for Persistence and Initial Access
Learn how adversaries abuse Microsoft ClickOnce for stealthy persistence and how to secure Windows environments against malicious deployment manifests.
Microsoft Office Launch Issues After June Windows Updates
Microsoft confirms issues preventing third-party applications from launching Office apps or opening documents on Windows systems after recent June updates.
Microsoft Copilot 'SearchLeak' Attack: AI Prompt Injection Data Theft
Analysis of the critical Microsoft Copilot 'SearchLeak' attack. Learn how prompt injection allowed 1-click data theft and crucial defense strategies for AI applications.
ScarCruft Deploys NarwhalRAT via Fake Microsoft Security Alerts
North Korean threat actor ScarCruft (APT37) is deploying NarwhalRAT via spear-phishing emails that mimic official Microsoft Account security notifications.
Microsoft 365 Copilot SearchLeak: One-Click Data Exfiltration
Varonis Threat Labs uncovered 'SearchLeak', a one-click flaw in Microsoft 365 Copilot Enterprise Search allowing exfiltration of emails, files, and MFA codes.
Microsoft Resolves Windows Update Failures with WUSA via Network Share
Microsoft has fixed an issue causing Windows updates released since May 2024 to fail when installed via the WUSA installer from a network share.
June 2026 Patch Tuesday: Microsoft Fixes 200 Flaws — Patch Now
Microsoft’s June 2026 Patch Tuesday addresses a record-breaking 200 vulnerabilities, including 36 critical flaws and several with public exploit code.
Windows Server 2025 BitLocker Recovery Bug: Mitigation Guide
Microsoft resolves a Windows Server 2025 bug causing systems to boot into BitLocker recovery modes following recent security updates. Patching guidance inside.
Microsoft Patch Tuesday: 200 Vulnerabilities Addressed
Microsoft addressed 200 vulnerabilities in its latest Patch Tuesday, including three publicly disclosed flaws. Prompt patching is essential for defense.
Microsoft Defender 'RoguePlanet' Zero-Day Grants SYSTEM Privileges
Analysis of 'RoguePlanet' zero-day in Microsoft Defender allowing local privilege escalation to SYSTEM, its impact, and critical patch guidance.