Most browsers allow you to install extensions, also called add-ons or plug-ins, that add features or functionality to your browser and improve or change the way websites are displayed. An example of a browser extension is AdBlock or uBlock Origin, which allows you to remove advertisements from websites.
If you have an extension installed on your browser, or if you have an extension from a third-party software developer that you don't want, you can disable or remove it.
How do I do if one of these is suspicious?
Installs suddenly without the user doing it manually.
Check online. Type on a search engine: "Is the extension (extension name) safe?".
How can I get rid of it?
Here's how to remove these suspicious extensions from your web browsers:
Google Chrome
Open Google Chrome;
Click the "Customize and control Google Chrome (the three vertical dots)" icon in the upper right corner of the window;
In the menu, select "More tools";
Then select "Extensions";
In the Extensions tab, the different extensions are listed as tabs. From here you can remove or disable them individually.
Firefox
Open Mozilla Firefox;
In the upper right corner of the window, click the hamburger menu icon;
In the drop-down menu select "Add-ons and Themes";
On the left of the "Manage Add-ons" tab, click "Extensions";
In the center of the screen, under "Extension Manager", you will find the list of installed extensions.
Microsoft Edge
Open Microsoft Edge;
Click the Settings and More icon in the upper right corner of the browser window;
In the drop-down menu that appears, select "Extensions";
Select "Manage extensions" in the window that appears;
In the center of the screen, under "Installed Extensions", there is a list of installed extensions.
Safaris
In the Apple menu bar, click on the "Safari" selector and select "Preferences";
In the "Preferences" window, click on the "Extensions" tab;
Uncheck the boxes next to the extensions you want to disable;
To remove the extension, select the extension name on the left, then click the "Uninstall" button.
Opera
Open Opera;
Click the Opera icon in the upper left corner;
Select "Extensions", then "Extensions" again;
In the center of the screen, under the "All" tab, there is a list of installed extensions.