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LOCAL-FILE-ACCESS

Local-File-Access

3 reports
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Microsoft Copilot Gains Local File Access via Hybrid Intelligence

Microsoft Copilot Gains Local File Access via Hybrid Intelligence

FIRST LOOK ATLAS OWASP MEDIUM Moderate risk · Monitor closely ▲ 5.8 The Verge AI

Microsoft has announced Hybrid Intelligence for Copilot, enabling the AI assistant to access local files, execute multi-step OS-level actions, and coordinate between local and cloud AI models on Windows PCs. For defenders, this represents a meaningful evolution in understanding how agentic AI systems interact with endpoint data and OS surfaces — a pattern that security teams now need to account for in endpoint policy and data governance frameworks. The capability arrives without detailed disclosure of permission scoping, audit logging, or consent controls, leaving security teams with open questions about how to govern Copilot's access to sensitive local assets.

Perplexity Launches Personal Computer AI Agent for Windows PCs

Perplexity Launches Personal Computer AI Agent for Windows PCs

FIRST LOOK ATLAS OWASP HIGH Significant risk · Prioritise patching ▲ 8.2 The Verge AI

Perplexity has expanded its Personal Computer agentic tool to Windows, enabling a locally-run AI agent that can access files, Office 365 apps, and the web on behalf of enterprise users. This significantly expands the attack surface for defenders: a compromised or manipulated agent running with local system access can exfiltrate files, execute unauthorised actions, and pivot across cloud-connected Microsoft 365 services. Security teams should treat this as a high-privilege process requiring the same scrutiny as endpoint detection tools, with particular attention to prompt injection via locally-processed documents.

CVE-2026-46331: Claude Cowork VM Sandbox Escape on macOS

CVE-2026-46331: Claude Cowork VM Sandbox Escape on macOS

ATLAS OWASP CRITICAL Active exploitation · Immediate action required ▲ 9.1 The Hacker News

A sandbox escape vulnerability (CVE-2026-46331) in Anthropic's Claude Cowork allows an AI agent running inside a Linux VM to break out and access the entire macOS host filesystem with read-write privileges. Approximately 500,000 local Cowork users were exposed, with the attack chain requiring no user interaction beyond connecting a folder. Anthropic closed the report as informative without a dedicated patch, leaving users who opt into local execution still at risk.

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