Is AdGuard AdBlocker safe to use?

AdGuard AdBlocker 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 AdGuard AdBlocker?

Based on our automated security analysis, AdGuard AdBlocker 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 "AdGuard AdBlocker" on Firefox Add-ons Safe to Install?

Name: AdGuard AdBlocker
Availability: InStock
Rating: 4.6442 (6796 reviews)
Author: Adguard Software Ltd

Adguard Software Ltd · firefox · v5.3.1.7

AdGuard ad blocker effectively blocks all types of ads on all web pages, even on Facebook, YouTube, and others! What AdGuard ad blocker does: Blocks all ads: video ads (including YouTube video ads), rich media advertising, unwanted pop-ups, banners and text ads (including Facebook advertisements); Speeds up page loading and saves bandwidth, thanks to the missing ads and pop up windows; Blocks many spyware, adware, and dialer installers; Protects your privacy by blocking common third-party tracking systems; Protects you from malware and phishing. How can AdGuard ad blocker protect your privacy? Just enable Tracking Protection filter in AdGuard settings. It completely removes all forms of tracking from the Internet. AdGuard has one of the largest tracker filters containing more than 5,000 rules. How to remove social media with AdGuard? Tired of all the «Like» buttons and similar widgets infesting all of your frequented web pages? Just enable AdGuard "Social media filter" and forget about them. How can AdGuard ad blocker protect you from online threats? At the moment we’ve got more than 2,000,000 harmful websites on record. AdGuard can block domains known to spread malware, protecting your computer against viruses, Trojan horses, worms, spyware, and adware. AdGuard really lowers the risk of virus infections and prohibits access to harmful websites to prevent potential attacks. Why does AdGuard require permissions? Access your data for all websites and Access browser tabs : both permissions are necessary for AdGuard to apply all kinds of cosmetic processing to the pages content. Naive ad blocking would simply block ad servers, and leave broken elements and first-party ads on the pages. AdGuard applies special cosmetic rules to make pages look clean and tidy. Access browser activity during navigation : this permission is necessary to keep track of navigation events in order to apply rules when the time is right. Release notes: https://github.com/AdguardTeam/AdguardBrowserExtension/releases Free and Open Source: https://github.com/AdguardTeam/AdguardBrowserExtension Found a bug? Have a problem and need help? Please report it: https://github.com/AdguardTeam/AdguardBrowserExtension/issues

Risk Assessment

Pending

out of 100

MINIMAL

0 security findings detected across all analyzers

Firefox extension requesting 16 permissions

No Threats Detected

This extension passed all security checks

About This Extension

AdGuard ad blocker effectively blocks all types of ads on all web pages, even on Facebook, YouTube, and others! What AdGuard ad blocker does: <ol><li>Blocks all ads: video ads (including YouTube video ads), rich media advertising, unwanted pop-ups, banners and text ads (including Facebook advertisements);</li><li>Speeds up page loading and saves bandwidth, thanks to the missing ads and pop up windows;</li><li>Blocks many spyware, adware, and dialer installers;</li><li>Protects your privacy by blocking common third-party tracking systems;</li><li>Protects you from malware and phishing.</li></ol> How can AdGuard ad blocker protect your privacy? Just enable Tracking Protection filter in AdGuard settings. It completely removes all forms of tracking from the Internet. AdGuard has one of the largest tracker filters containing more than 5,000 rules. How to remove social media with AdGuard? Tired of all the «Like» buttons and similar widgets infesting all of your frequented web pages? Just enable AdGuard "Social media filter" and forget about them. How can AdGuard ad blocker protect you from online threats? At the moment we’ve got more than 2,000,000 harmful websites on record. AdGuard can block domains known to spread malware, protecting your computer against viruses, Trojan horses, worms, spyware, and adware. AdGuard really lowers the risk of virus infections and prohibits access to harmful websites to prevent potential attacks. Why does AdGuard require permissions? <ul><li>Access your data for all websites and Access browser tabs: both permissions are necessary for AdGuard to apply all kinds of cosmetic processing to the pages content. Naive ad blocking would simply block ad servers, and leave broken elements and first-party ads on the pages. AdGuard applies special cosmetic rules to make pages look clean and tidy.</li><li>Access browser activity during navigation: this permission is necessary to keep track of navigation events in order to apply rules when the time is right.</li></ul> Release notes: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/0e9d0cb454a432c58c1509cca20541837db6f6574fec2a415d840667be59a586/https%3A//github.com/AdguardTeam/AdguardBrowserExtension/releases" rel="nofollow">https://github.com/AdguardTeam/AdguardBrowserExtension/releases</a> Free and Open Source: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/321a826b3004d658cfff11765067682f1ead906a6376e367496beae7160fea5f/https%3A//github.com/AdguardTeam/AdguardBrowserExtension" rel="nofollow">https://github.com/AdguardTeam/AdguardBrowserExtension</a> Found a bug? Have a problem and need help? Please report it: <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/6a2a666429fd047db419641e790f84574b2b397d5acde64b0551bbad91e1a757/https%3A//github.com/AdguardTeam/AdguardBrowserExtension/issues" rel="nofollow">https://github.com/AdguardTeam/AdguardBrowserExtension/issues</a>

No Findings

All security checks passed

Security Analysis Summary

Security Analysis Overview

AdGuard AdBlocker is a Firefox Add-ons extension published by Adguard Software Ltd. Version 5.3.1.7 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

AdGuard AdBlocker is published by Adguard Software Ltd on the Firefox Add-ons marketplace. The extension has approximately 1.7M 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.