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Microsoft Paint embeds hidden IDs in locally generated AI images

📅 25 August 2026 at 16:10 UTC📰 Cyber InsiderView original source ↗
Microsoft Paint embeds hidden IDs in locally generated AI images

Microsoft Paint and Photos appear to embed an invisible, server-issued identifier into AI-generated images, including pictures created locally on Copilot+ PCs. Reverse engineering shows that while image generation can happen on-device, prompts are still sent to Microsoft for moderation, which returns a unique GUID that is then hidden inside the image pixels. The findings come … The post Microsoft Paint embeds hidden IDs in locally generated AI images appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

Microsoft Paint embeds a unique identifier in locally generated AI images, potentially allowing for device correlation and tracking. This hidden identifier is also present in image metadata.

⚙️Technical Details
💥Impact Assessment
Severity: medium
Who Is at Risk
Windows users with Microsoft Paint and Photos installed
🛡️Recommended Actions
1Disable AI-generated images in Microsoft Paint
2Review image metadata for hidden identifiers
3Consider disabling Microsoft Paint and Photos until further notice
📦Affected Products
Software:Microsoft PaintPhotosHardware:Copilot+ PCs

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