All reports

Is uBlock safe?

This security report analyses whether uBlock is safe to install on your browser. We check uBlock for malicious behaviour, data exfiltration, suspicious permissions, and known vulnerabilities so you can decide if uBlock is safe for your personal or enterprise fleet.

Low risk

uBlock (eyeo GmbH fork, NOT uBlock Origin) is a functional ad blocker that implements privacy telemetry collecting device fingerprinting data (browser version, OS, install type) and sending it to ping.ublock.org and ublock.telemetry.eyeo.com with a persistent user ID. Includes acceptable ads program allowing certain whitelisted advertisers. Keylogging flag is false positive from CDP session activity detection. No malicious behavior, browsing history collection, or credential theft detected. Uses TensorFlow.js ML models for ad detection. Users seeking privacy should use uBlock Origin instead.

0Risk

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

Publishers can request a review.

Updated 10 April 2026epcnnfbjfcgphgdmggkamkmgojdagdnn

Worried about uBlock? Check what else is installed.

Our free browser scan checks your installed extensions against our threat database in seconds. No signup required.