Whenever I open Mozilla Firefox, I receive a red URL:Mal warning popup from Avast.
This happens before I actually browse anything.
If I leave Firefox open, a similar popup appears at (seemingly) random intervals.
The actual URLs being reported vary. I do not recognize the URLs; they do not belong to sites I have ever visited.
The same does not happen with any other browsers eg Chrome works fine.
I use Avast! free version.
Furthermore, re-installing Firefox did not solve the problem.
Any advice?
Thank you in advance for your help.
Follow instructions https://forum.avast.com/index.php?topic=53253.0
Attach Malwarebytes and Farbar logs … then help will arrive tomorrow