Untrusted impersonation of the project at detectron2.org

## ⚠️ Warning: This project is being impersonated

An untrusted website at **[detectron2.org](https://detectron2.org)** is impersonating this project. The site poses as an official resource. While it currently links to GitHub for downloads, **the site operator can replace these links with malicious files at any moment** without warning.

### What the site does

- Copies the project name, description, and branding to appear legitimate
- Currently links to GitHub downloads, but these links are **under the site operator's control and can be swapped out at any time**
- May collect user data or serve tampered downloads in the future

### How this was discovered

This domain was found as part of a broader investigation into a network of impersonation sites targeting open-source projects. Many of these sites share the same infrastructure and template.

### Recommended actions

For steps on how to report this site and request a DMCA takedown, see:
**https://gist.github.com/zerobitflux/57f3791086e18481030df9c204b323fe**

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*This issue was created to alert maintainers. If you believe this was filed in error, please close it with a comment.*

Review the impersonating site at detectron2.org and the reporting and DMCA guidance in the linked gist. Confirm the report with the maintainers and determine the appropriate response; done is a documented maintainer decision or closure if the report is invalid.

Written by the indexing model from the issue text.