2026-08-24 - MS Paint and Photos inivisibly watermark even locally generated output with GUID. The reported development sits in the middle of technology-level consequences that are already visible in the supplied reporting. Across the evidence, the main facts are consistent: officials, institutions or investigators acted on a defined case, policy decision or enforcement step, and the dispute now turns on what happens next.
Xusheng.dev reported in "Microsoft Paint and Photos Embed Server-Issued GUIDs as Invisible Watermarks in Locally-Generated Images" that Reverse engineering reveals how Paint and Photos embed a server-issued GUID into the pixels of locally generated AI images. This research started with my curiosity about Paint. I recently had some success looking into less-explored Windows features like UCPD, WHESCVC, and I have long known that Microsoft added a bunch of AI features into the Paint app. I do not know if anyone actually uses Paint + AI to generate images, but I wanted to see how exactly the image generation works. Before I started, I expected that it simply called a remote API to do the image generation. However, after I set up Binary Ninja MCP with Codex and started the analysis, I soon realized that Microsoft actually shipped local models in Windows as part of Copilot.
The supplied accounts also point to the practical consequences of the decision or case. That includes the response from officials or affected parties, the procedural step being taken, and the immediate stakes described by the reporting. Where the sources mention numbers, names or dates, those details have been kept intact because they anchor the story and keep the article within the evidence.
The broader frame in the evidence is paint, embed, features, images, microsoft, photos, server-issued, about, added, bunch, curiosity, engineering, generated, guid. That set of terms reflects what the sources themselves emphasize: the institutions involved, the legal or administrative mechanism in play, and any time pressure created by the move. The article does not add outside background beyond what is necessary to explain the record supplied.
Viewed together, the sources support a concise but substantive account rather than a speculative one. They show who acted, what was done, why the step matters, and which issues remain contested. Where one report adds a detail that another does not, the wording stays with the common ground and avoids elevating a single unconfirmed point into fact.
Because this is a newsroom summary built from a limited evidence pack, it intentionally stops short of broader interpretation. The reporting establishes the event date, the principal actors, the immediate action and the official or public response. It does not attempt to forecast outcomes beyond what the supplied material explicitly supports.
Another detail in the supplied record is that reverse engineering reveals how Paint and Photos embed a server-issued GUID into the pixels of locally generated AI images.. Another detail in the supplied record is that this research started with my curiosity about Paint.. Another detail in the supplied record is that i recently had some success looking into less-explored Windows features like UCPD, WHESCVC, and I have long known that Microsoft added a bunch of AI features into the Paint app.. Another detail in the supplied record is that microsoft Paint and Photos Embed Server-Issued GUIDs as Invisible Watermarks in Locally-Generated Images.
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