Is uBlock Origin safe to use?

uBlock Origin has a security risk score of 0/100 (MINIMAL risk). Our security analysis detected 0 findings. Review the detailed security assessment below to understand the specific risks before installation.

What are the security risks of uBlock Origin?

Based on our automated security analysis, uBlock Origin presents minimal risk level. The extension is analyzed for malware patterns, secret exposure, network communications, permissions, and supply chain vulnerabilities.

How is the security score calculated?

Risky Plugins calculates security scores using weighted categories: severity of findings (25 points max), malware detections (35 points), secret exposure (28 points), network communications (10 points), and obfuscation (10 points). Scores range from 0-100, with higher scores indicating greater risk.

What does CRITICAL, HIGH, MEDIUM, LOW, MINIMAL risk mean?

CRITICAL (80-100): Severe security issues like malware. HIGH (60-79): Significant vulnerabilities. MEDIUM (40-59): Moderate security concerns. LOW (20-39): Minor issues. MINIMAL (0-19): Very low risk. Always review findings before installing any extension.

Is "uBlock Origin" on Firefox Add-ons Safe to Install?

Name: uBlock Origin
Availability: InStock
Rating: 4.7983 (21100 reviews)
Author: Raymond Hill

Raymond Hill · firefox · v1.67.0

uBlock Origin is not an "ad blocker", it's a wide-spectrum content blocker with CPU and memory efficiency as a primary feature. *** Out of the box, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default: - EasyList (ads) - EasyPrivacy (tracking) - Peter Lowe’s Ad server list (ads and tracking) - Online Malicious URL Blocklist - uBO's own lists More lists are available for you to select if you wish: - EasyList Cookie - Fanboy Annoyances - AdGuard Annoyances - Dan Pollock’s hosts file - And many others Additionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many more advanced features. *** Free. Open source with public license (GPLv3) For users by users. If ever you really do want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free. *** Documentation Release notes Community support @ Reddit Contributors @ GitHub Contributors @ Crowdin

Risk Assessment

Pending

out of 100

MINIMAL

0 security findings detected across all analyzers

Firefox extension requesting 23 permissions

No Threats Detected

This extension passed all security checks

About This Extension

uBlock Origin is <b>not</b> an "ad blocker", it's a wide-spectrum content blocker with CPU and memory efficiency as a primary feature. *** Out of the box, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default: - EasyList (ads) - EasyPrivacy (tracking) - Peter Lowe’s Ad server list (ads and tracking) - Online Malicious URL Blocklist - uBO's own lists More lists are available for you to select if you wish: - EasyList Cookie - Fanboy Annoyances - AdGuard Annoyances - Dan Pollock’s hosts file - And many others Additionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many more advanced features. *** Free. Open source with public license (GPLv3) For users by users. If ever you really do want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free. *** <ul><li><a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/788d66e7299bdfb1da05832994551640d0ad441e148a3e29afe8dd0a5a90800c/https%3A//github.com/gorhill/uBlock%23ublock-origin" rel="nofollow">Documentation</a></li><li><a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/de148deb19b52874eb4c5726859834f3294a6057ed44e873c958acee4c920062/https%3A//github.com/gorhill/uBlock/releases" rel="nofollow">Release notes</a></li><li><a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/32c3d6819f5263e56c265042e8d34e2da4d974e73a7ad55a81786d8995cf65a9/https%3A//www.reddit.com/r/uBlockOrigin/" rel="nofollow">Community support @ Reddit</a></li><li><a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/9bfaba4f3fe3310ae0a3189187f5fbab185097d85398752765e086889775079e/https%3A//github.com/gorhill/uBlock/graphs/contributors" rel="nofollow">Contributors @ GitHub</a></li><li><a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/6a44868e1580018df8d4d87adf8e97cc74b71b962a73dd5a64604f99db767287/https%3A//crowdin.net/project/ublock" rel="nofollow">Contributors @ Crowdin</a></li></ul>

No Findings

All security checks passed

Security Analysis Summary

Security Analysis Overview

uBlock Origin is a Firefox Add-ons extension published by Raymond Hill. Version 1.67.0 has been analyzed by the Risky Plugins security platform, receiving a risk score of 0/100 (MINIMAL risk) based on 0 security findings.

Risk Assessment

This extension presents minimal security concerns. The automated analysis found very few or no issues, suggesting it is suitable for general use.

What Was Analyzed

The security assessment covers multiple analysis categories:

Malware Detection: YARA rule matching against 2,400+ malware signatures
Secret Detection: Scanning for exposed API keys, tokens, and credentials
Static Analysis: Code-level security analysis for common vulnerability patterns
Network Analysis: Detection of suspicious network communications and endpoints
Obfuscation Detection: Identification of code obfuscation techniques

Developer Information

uBlock Origin is published by Raymond Hill on the Firefox Add-ons marketplace. The extension has approximately 10.0M users.

Recommendation

Based on the automated security analysis, this extension appears safe for general use. As with any extension, users should review the requested permissions before installation.

Source Code Viewer

Source Code Not Available

Source code is not available for this version of the extension.