What happened?
GitHub learned from an internal discovery by a GitHub employee, that GitHub Pages sites published from private repositories on GitHub were being sent to urlscan.io for metadata analysis as part of an automated process. This internal process was implemented before the private GitHub Pages feature was released and provides metadata that is used during human review of potentially malicious or abusive GitHub Pages sites.
GitHub learned from an internal discovery by a GitHub employee, that GitHub Pages sites published from private repositories on GitHub were being sent to urlscan.io for metadata analysis as part of an automated process. This internal process was implemented before the private GitHub Pages feature was released and provides metadata that is used during human review of potentially malicious or abusive GitHub Pages sites.