The Audio Hijack
Modern web browsers allow websites to request direct access to your computer’s microphone. While this is necessary for browser-based video conferencing tools (like Google Meet or Zoom web), it is a massive privacy liability. Malicious websites or poorly coded advertising scripts frequently spam the browser with permission requests to activate your microphone, hoping you accidentally click “Allow.” Even worse, a compromised website could theoretically abuse a previously granted permission to record background audio without your knowledge. If you use dedicated desktop applications for your video calls and refuse to allow web browsers to monitor your physical hardware, you must completely sever Chrome’s access to your microphone.
How to Block Microphone Access Globally
You can permanently lock the browser out of your audio hardware via the Site Settings.
- Open the Google Chrome desktop browser.
- Click the three vertical dots (⋮) in the top right corner and select Settings.
- In the left-hand sidebar, click on Privacy and security.
- In the main window, click on Site settings.
- Under the “Permissions” heading, click on Microphone.
- Under the “Default behavior” heading, select the radio button for “Don’t allow sites to use your microphone.”
Hardware Isolation
The change is instantaneous. Google Chrome will completely sever its connection to the Windows or macOS audio driver stack. The browser will instantly auto-reject every single microphone request it receives. You will never again see a pop-up asking for permission, and no website will ever be able to record your voice, guaranteeing absolute silence and total privacy from web-based tracking.