Over the past two weeks, Mozilla 's research team has blocked 197 Firefox add-ons that were found to be dangerous. Specifically, the add-ons were found to execute malicious code, steal data , and hide their source code. user 
According to Mozilla, the add-ons have been banned and removed from the Mozilla Add-on (AMO) so that they cannot be installed. They have also been disabled from the browsers of users who have already installed them so that they cannot use them.
129 of the 197 plugins that were banned were created by 2Ring, a B2B software vendor. The ban was imposed because the plugins downloaded and executed code from a remote server.
According to Mozilla regulations, add-ons must contain their own code and not download code from remote locations.
For the same reason, six other add-ons, developed by Tamo Junto Caixa and three that were considered fake premium products, were banned.
In addition to downloading and executing code, researchers observed that some add-ons were illegally collecting user data. These add-ons were: WeatherPool and Social, Pdfviewer – tools, RoliTrade, Rolimons Plus, and another anonymous add-on.
Finally, add-ons that exhibited malicious behavior were banned. Mozilla researchers banned 30 such add-ons.
Mozilla only listed the add-on IDs, not their names. developers will have to remove the malicious behavior if they want to be allowed to run again.
Some of the most well-known additives that were banned:
Like4Like.org: Mozilla researchers discovered that the add-on collects credentials and tokens from social media websites and transfers them to another site.
FromDocToPDF: Loads content remotely into the new Firefox tab.
Fake Youtube Downloader: Attempts to install malware on users' browsers.
EasySearch for Firefox, EasyZipTab, FlixTab, ConvertToPDF and FlixTab Search: Track and collect information related to user.
Finally, Mozilla security staff banned several add-ons that used “obfuscated code,” a technique that makes code harder to read. The goal is usually to hide malicious behavior.
