Is AdGuard Browser Assistant safe?

Clean risk

AdGuard Browser Assistant forwards the current tab URL and port to the AdGuard desktop app via native messaging on each tab switch.

When you activate or navigate to a tab, the extension sends the page URL and port number to the locally installed AdGuard desktop application through a native messaging channel named com.adguard.browser_extension_host.nm. This is how the browser extension communicates filtering state with the desktop app. No data is sent to remote servers; all communication stays on your local machine.

Adguard Software Ltdv1.4.8Firefox Add-ons
0Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Data recipients

AdGuard desktop app (local native messaging host: com.adguard.browser_extension_host.nm)
Updated 17 September 2026amo-2622035