Nano Defender for Firefox

Name: Nano Defender for Firefox
Rating: 4.5411 (146 reviews)
Author: LiCybora

By: LiCybora Add-on

Companion extension for Nano Adblocker

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Features & Capabilities

Nano Defender for Firefox is a companion extension designed specifically to enhance ad-blocking capabilities of Nano Adblocker and uBlock Origin browsers. It's tailored to block ad reinsertion efforts and protect against detection probing, ensuring a smoother, uninterrupted browsing experience.

This extension requires Nano Adblocker or uBlock Origin to function, and does not support other ad blockers. Users of uBlock Origin may need to follow additional installation steps to fully integrate Nano Defender. The extension also includes a quick and easy issue reporter to help users resolve any problems efficiently. Nano Defender is actively maintained with its source code openly available for review, emphasizing transparency and user trust.

User Growth & Download Statistics

Add-on Privacy & Security

By:

Daily users:

Rating:

Version:

15.0.0.206 Last updated: 2020-10-13

Version code:

5115012

Creation date:

2019-01-31

Risk:

Permissions:

Content scripts matches:

Size:

78.02KB

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-07-14

Compare stats and ranking:

Ranking

# 1,238 ▼ 15

Other rankings

#254 in Privacy & Security ▼ 4

#9 in wa sender keyword 30

#20 in defi keyword 32

#43 in firefox keyword 20

#61 in foe keyword 20

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For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

LiCybora

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/nano-defender-firefox/

Website:

https://github.com/LiCybora/NanoDefenderFirefox

User Reviews

Users value Nano Defender for Firefox as an effective complement to uBlock Origin, appreciating its safety and adblock detection circumvention. However, many report that the extension has not been updated for months, causing filter lists and extra setup steps to fail. The Adblock Warning Removal List subscription is commonly reported as broken, reducing effectiveness on some sites. Additionally, there is confusion about the addon’s security stemming from issues with the Chromium version, though the Firefox version remains distinct.

Pros

Effective at blocking adblock detection mechanisms.
Works well alongside uBlock Origin.
Maintained separately from the Chromium version, avoiding malicious code issues.
Appreciated by users for its intended functionality and safety on Firefox.
Despite concerns, still functional for some users.

Cons

No longer updated, leading to outdated filter lists and features.
Extra steps and filter subscriptions for uBlock Origin often fail or are broken.
Adblock Warning Removal List is difficult or impossible to subscribe to.
Some users report that the extension no longer works properly on certain sites.
Confusion and concern over ownership and security due to the Chromium version being sold and altered.

Recent reviews

This addon does allow me to have my Adblocker Ultimate extension running while on wco.tv. I still have to wait for 10 seconds before pressing play, but at least the adblock nagscreen no longer shows up!

by AN*****, 2026-06-10

Sad, already dead.

by Mi*****, 2026-05-27

View all user reviews ›

Is Nano Defender for Firefox Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Nano Defender for Firefox requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
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Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Nano Defender for Firefox has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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