Behind the scene network requests

The filtering of behind-the-scene network request is available to advanced users.

What are behind-the-scene network requests

Behind-the-scene network requests are those network requests which µBlock can not associate with a specific tab opened in your browser: these requests come from somewhere, but µBlock is missing information to report exactly from here.

All network requests without a specific origin are classified as behind-the-scene. Typically, all blockers will ignore and automatically whitelist behind-the-scene network requests.

For the Chromium browser, examples of behind-the-scene network requests:

• from the browser to update extensions
• from the browser because of specific functionality, like the setting "Use a prediction service to help complete searches and URLs typed in the address bar"
• fired by through navigator.sendBeacon(), hyperlink auditing, etc.
• made by installed extensions for good or bad reasons (µBlock makes such requests, to fetch the filter lists when they need to be updated)
• etc.