Blocking of Google Chrome FLoC

Table of contents

  1. Google FLoC
  2. Set HTTP response header

Google FLoC

Based on an article from DuckDuckgo at Use the DuckDuckGo Extension to Block FLoC, Google’s New Tracking Method in Chrome and from EFF at Google’s FLoC Is a Terrible Idea, I added today the recommended Permissions-Policy into my web server configuration.

I completely support and agree to DuckDuckGo’s and EFF’s analysis that FLoC is a bad idea for privacy.

Set HTTP response header

The HTTP response header can be set in the Apache2 configuration file for a web site like this.

    Header set Permissions-Policy: interest-cohort=()

As shown in the screenshot the web server delivers the Permission-PolicyHTTP header:

Web server header sent to block FLoC

Please note also that EFF provides a web site at to check if Chrome is using FLoC.