Data Exfiltration
The latest Data Exfiltration coverage — news, analysis, and updates from the WindowsNews.AI desk.
CVE-2026-42824: Microsoft Shuts Down ‘SearchLeak’ Attack Chain in Copilot
Microsoft has rolled out a critical security update for Microsoft 365 Copilot that neutralizes a one-click data-exfiltration attack chain that researchers at Varonis dubbed “SearchLeak.” The...
AI Browser Security: Microsoft Copilot, Edge Vulnerabilities & Real-World Risks
Microsoft's integration of AI-powered browsing features across Windows 11, Edge, and Copilot has fundamentally changed how users interact with the web. These AI browsers—no longer experimental...
Copilot-Driven Excel XSS in CVE-2026-26144 Lets Attackers Steal Data Without Clicks
Microsoft's March Patch Tuesday revealed a critical vulnerability that exposes how deeply integrated AI assistants can amplify traditional software flaws. CVE-2026-26144, a cross-site scripting (XSS)...
Excel Copilot Agent Vulnerability CVE-2026-26144: Zero-Click Data Exfiltration Threat Patched in March 2026 Update
Microsoft's March 10, 2026 Patch Tuesday addressed a critical security vulnerability that demonstrates how legacy flaw classes gain dangerous new capabilities when combined with modern AI assistants....
Excel CVE-2026-26144 XSS Vulnerability Enables Copilot Data Exfiltration in Zero-Click Attack
Microsoft's March 2026 Patch Tuesday addressed a critical Excel vulnerability that creates a dangerous new attack vector for AI-powered data theft. CVE-2026-26144, a cross-site scripting flaw in...
Malicious AI Browser Extensions Steal Corporate Data: Microsoft Defender Exposes New Threat
A new wave of sophisticated cyberattacks is targeting enterprises through a deceptive vector: malicious browser extensions masquerading as legitimate AI assistant tools. Microsoft Defender for...
Windows 11 Default Browser: How EU DMA Forced Microsoft's One-Click Switch
Microsoft has fundamentally transformed the Windows 11 default browser experience, implementing a streamlined one-click switching mechanism that represents a significant departure from years of user...
Microsoft's Windows 11 Reliability Swarming Initiative: A 2026 Deep Dive
Microsoft's public commitment to "fix Windows 11" represents more than just corporate messaging—it's a direct and urgent response to widespread, tangible user frustration with the platform's...
Reprompt Attack Threatens Copilot Security: How Windows Users Can Protect Their Data
Security researchers have uncovered a sophisticated vulnerability in Microsoft's Copilot AI assistant that could allow attackers to create stealthy data-exfiltration pipelines through seemingly...
MaliciousCorgi Attack: How Fake VS Code AI Extensions Stole Developer Data
The discovery of two malicious Visual Studio Code extensions posing as AI coding assistants has sent shockwaves through the developer community, revealing a sophisticated supply chain attack that may...
Windows 11's Night Light: Why Your Blue Light Filter Might Not Be Enough in 2026
If you’re one of the millions who toggle on Windows 11’s Night Light every evening, you’ve likely noticed the immediate warmth that washes over your screen—a signal that your PC is trying to...
Microsoft Copilot Reprompt Attack: How a Single Link Can Exfiltrate Your Data
Security researchers have uncovered a deceptively simple yet dangerous exploit targeting Microsoft Copilot that could turn a single click on a legitimate-looking link into a live data-exfiltration...