Step 4. IP and DNS Settings
Re-Launch Safari but don’t forget to press and hold the Shift button while doing it, so no previous pages can be opened up. Now, Click on Preferences in the Safari menu,
and then again on the Extensions tab,
Step 5. Uninstall App
Select and Uninstall any extensions that you don’t recognize by clicking on the Uninstall button. If you are not sure and don’t want to take any risks you can safely uninstall all extensions, none are required for normal system operation.
The threat has likely infected all of your browsers. The instructions below need to be applied for all browsers you are using.
Again select Preferences in the Safari Menu, but this time click on the Privacy tab,
Now click on Remove All Website Data, confirm with Remove Now. Keep in mind that after you do this all stored website data will be deleted. You will need to sign-in again for all websites that require any form of authentication.
Still in the Preferences menu, hit the General tab
Check if your Homepage is the one you have selected, if not change it to whatever you prefer.
Select the History menu this time, and click on Clear History. This way you will prevent accidentally opening a problematic web page again.