Time to remove Nano Adblocker and Defender from your browsers (except Firefox)

Martin Brinkmann
Oct 16, 2020
Updated • Oct 16, 2020
Internet, Security

When Nano Defender was launched in 2019, it quickly became a go-to extension to bypass anti-adblocking mechanisms on Internet sites. It used code from uBlock Origin, one of the most prominent content blocking extensions, and users started to install the new extension in Chrome and other Chromium-based browsers.

One of the main differentiating factors between Nano Defender and uBlock Origin was that the former supported a reporting option to let the developer know about issues encountered while using the extension.  A port for Firefox was created by another developer to cover all major browsers on the Windows platform.

Nano Defender has more than 200,000 users that installed the extension from the Chrome Web Store alone.

The developer of the extension revealed on the official GitHub that he decided to sell the extension twelve days ago to two Turkish developers.

Community members and Raymond Hill, developer of uBlock Origin, shared their thoughts on the deal and the fact that little information was provided. Gorhill suspected that the new owners main intention was to monetize the extension in one form or another, or do worse with it.

ublock origin anti-adblocking

The new owners uploaded a new version to the Chrome store, and careful analysis of the code of the extension revealed that it contained a new connect.js file that did not come from the project's GitHub page.

Hill provided an analysis of the code and discovered that the new code allowed the developers to submit user activity and data to remote servers.

The extension is now designed to lookup specific information from your outgoing network requests according to an externally configurable heuristics and send it to https://def.dev-nano.com/.

Hill suggested that users uninstall Nano Defender / Nano Adblocker immediately to block data from being submitted to the new owners.

The Firefox fork of the extension was not part of the deal, and the maintainer of it expressed interest to rename it and continue maintaining it. All other versions of the extension, basically any for Chromium-based browsers, should be removed immediately. Users who want to be on the safe side should remove the Firefox extension as well.

Time to remove Nano Adblocker and Defender from your browsers (except Firefox)
Article Name
Time to remove Nano Adblocker and Defender from your browsers (except Firefox)
You should remove Nano Adblocker and Nano Defender from your Chromium-based browsers immediately. Find out why here!
Ghacks Technology News

Tutorials & Tips

Previous Post: «
Next Post: «


  1. smaragdus said on October 7, 2012 at 8:55 pm

    I have just tested the Wikipedia Book Creator and in works fine. I am pleased that the output format can be EPUB which is far superior than PDF. For me EPUB is the best e-book format, I prefer it to FB2 DJVU and especially over PDF, not to mention Microsoft LIT, Amazon and Mobipocket trash.

  2. benny said on November 2, 2012 at 9:21 am

    they actually had epub export for awhile but then stopped. good to see it’s back.

Leave a Reply

Check the box to consent to your data being stored in line with the guidelines set out in our privacy policy

We love comments and welcome thoughtful and civilized discussion. Rudeness and personal attacks will not be tolerated. Please stay on-topic.
Please note that your comment may not appear immediately after you post it.