All reports

Is AdBlock — block ads across the web safe?

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

Low risk

AdBlock is a widely-used ad-blocking extension by Adblock, Inc. It collects anonymized usage statistics and filter hit data and transmits them to getadblock.com servers, with user opt-out available. Multiple postMessage handlers lack strict origin checks but use contextual validation such as source window matching.

45Risk

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

Publishers can request a review.

Updated 10 April 2026gighmmpiobklfepjocnamgkkbiglidom

Worried about AdBlock — block ads across the web? Check what else is installed.

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