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Mozilla Firefox: 126+ Search Categories Telemetry

July 20, 2026 - 12:45 pm

This detection was added in Anti-Beacon 6.7.

Anti-Beacon treats this as telemetry because Mozilla introduced Firefox search-result-page categorization telemetry in Firefox 126. Mozilla’s Firefox 126 release notes say: “Telemetry was added to create an aggregate count of searches by category” (Firefox 126 Release Notes). Mozilla describes the categories as high-level content types and says the data is collected using OHTTP to remove IP addresses as potentially identifying metadata.

Anti-Beacon disables Firefox search category telemetry. This does not claim to block all Firefox search telemetry; it targets the Firefox 126+ feature that counts searches by category.

Microsoft Edge Default Browser Setting

January 21, 2025 - 4:36 pm

If you just rarely use Edge and don’t want it to be your default, apply this immunizer to prevent it from trying to become your default browser.

Microsoft Edge Tab Preloading

January 21, 2025 - 4:35 pm

Preloading makes Microsoft Edge load the Start and New Tab pages automatically each time you sign into Windows. This speeds up loading the browser, but also means a contact that... continue reading

Microsoft Edge Follow Creators

June 10, 2024 - 8:19 pm

The Follow Creators function in Microsofts Edge browser submits all URLs to a Bing server, see this article on TheVerge: “Microsoft Edge now has a creator follow feature that is... continue reading

Opera SiteCheck

June 10, 2024 - 8:14 pm

Opera SiteCheck is a security feature of Opera browsers submitting the domain name of every visited website to Opera to check if it may contain fraud. This even happens in... continue reading

Mozilla Firefox WebGL (disable)

February 14, 2023 - 1:21 pm

WebGL in Firefox is a security risk (see ArchWiki, see StackExchange). We recommend to disable it.