Microsoft Teams Adds New Security Feature to Detect Malicious QR Codes in Messages
Microsoft Teams will warn users when Defender detects malicious URLs embedded in QR codes in messages.
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Stories tagged #defender
Microsoft Teams to Warn Users About Malicious Links Hidden in QR Codes
Microsoft Teams will warn users when Defender finds malicious URLs hidden inside QR codes.
WSL containers are generally available on Windows
Microsoft made WSL containers generally available with Intune controls and Defender for Endpoint visibility.
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Microsoft is rolling out Linux container support to WSL
Microsoft made Linux container support in WSL generally available, with Defender and Intune controls.
Microsoft integrates SOC capabilities with Defender for enterprises
Microsoft is previewing Defender ISOC, bundling SIEM into Microsoft 365 E5 and E7 without an extra license.
Microsoft Rebuilds the SOC with AI Agents, SIEM Integration and Machine-Speed Defense
Microsoft previewed an integrated SOC pairing Defender, SIEM, and AI agents for faster response.
Microsoft Rebuilds the SOC With AI Agents to Fight Machine-Speed Cyberattacks
Microsoft previews Defender ISOC, an AI-agent security operations platform for machine-speed attacks.
Reimagining the SOC for the agentic era in Microsoft Defender
Microsoft previews an integrated SOC in Defender that unifies SIEM and protection for agentic defense.
New Windows Defender zero-day blocks Microsoft antivirus updates
New Windows Defender zero-day exploit BigDiskBuster blocks antivirus updates on all supported Windows versions.
Improving email security outcomes with real-world Microsoft Defender insights
Microsoft's quarterly benchmark claims Defender missed 55.4% fewer high-severity email threats than the next-closest secure email gateway.
Top 10 Best Server Security Solutions in 2026
Cyber Security News ranks 2026 server security platforms, favoring Trend Micro for hybrid estates, CrowdStrike for detection, Defender for Azure economics.
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New ‘ShieldCrash’ Zero-Day Exploit Targets Microsoft Defender
Researcher Nightmare Eclipse released ShieldCrash, a Microsoft Defender zero-day PoC bypassing ShieldBreak patches to gain System privileges on Windows.
September 2026 Patch Tuesday forecast: All we need is more time
September 2026 Patch Tuesday forecast expects record CVE volume after August's 398 fixes, with SharePoint flaws CVE-2026-55040 and CVE-2026-63520 actively exploited.
Researcher Drops New Microsoft Defender PoC Showing ShieldBreak Patch Can Be Bypassed
Researcher Chaotic Eclipse released a PoC showing CVE-2026-69414's patch is bypassable, allowing arbitrary file reads as SYSTEM on current Windows.
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Four REVSTEALER-Linked Modules Disable Windows Update and Defender to Run a Crypto Miner
Elastic documents four persistent REVSTEALER-linked tools (ProManager, WinUpdate, SoftManager, LockAppHost); LockAppHost disables Windows Update and Defender to run a crypto miner.
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ShieldBreak: New Windows Zero-Day Bypasses Microsoft’s RoguePlanet Patch
Researcher Chaotic Eclipse published a PoC bypassing Microsoft's CVE-2026-50656 Defender patch, enabling SYSTEM-level code execution on fully patched Windows systems.
Microsoft patches 400+ vulnerabilities, one zero-day under attack (CVE-2026-68820)
Microsoft's August 2026 Patch Tuesday fixes 400+ vulnerabilities, including an actively exploited Windows zero-day (CVE-2026-68820) used by North Korean attackers.