Is Adblock Ultra safe?
Adblock Ultra downloads dynamic network rules from adblockerultra.com that can modify requests across all websites.
On install or update, Adblock Ultra requests a dbuid from adblockerultra.com and stores it locally. It then fetches rule metadata from adblockerultra.com/filters4/net_versions/ with that id and the extension version, retrieves the returned JSON rule file, and installs those rules as dynamic network request rules that can alter matching traffic across all URLs.
AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.
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What it can do
Permissions this extension asks for, as declared in version 4.0.4. 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
Schedule its own background tasks
alarms
Run its own code inside the pages you visit
scripting
Store data in your browser
storage
Block and redirect the requests your browser makes
declarativeNetRequest
See which of your requests its blocking rules matched
declarativeNetRequestFeedback
Store an unlimited amount of data in your browser
unlimitedStorage
See every page you navigate to, as you navigate to it
webNavigation
Where it sends data
Destinations our analysis observed Adblock Ultra 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.
- adblockerultra.com
Adblock Ultra sends data to adblockerultra.com. No other extension we have analysed sends data here.