Is AdLock safe?

Medium risk

AdLock fetches remote filter rules that can inject server-supplied JavaScript into HTTP and HTTPS pages.

AdLock runs a content script at page start on all HTTP and HTTPS pages, then asks its background script for scripts that match the current hostname. The background script downloads filter resources from api.adlock.com and can return rule-provided JavaScript for the content script to insert into the page. Its update requests also send a persistent install UUID, browser locale, extension version, and blocked-request count to api.adlock.com.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

Hankuper s.r.o.v0.1.11Firefox Add-ons
45Risk

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

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 0.1.11. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    <all_urls>

  • See the address and title of every tab you have open

    tabs

  • Store data in your browser

    storage

  • Store an unlimited amount of data in your browser

    unlimitedStorage

  • See every page you navigate to, as you navigate to it

    webNavigation

  • Watch every request your browser makes

    webRequest

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

Where it sends data

Destinations our analysis observed AdLock contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • api.adlock.com

    AdLock sends data to api.adlock.com. No other extension we have analysed sends data here.

Updated 30 September 2026amo-2605640