Root of the problem
>but the root of the problem has not been fixed.
Of course not! The root of the problem is an insecure by design network coupled with the fact that once it reached a certain saturation point in world-wide usage, unscrupulous people were bound to use it to separate the foolish and/or ignorant from their money. When you can reach 100,000,000 people for pennys, even a 0.001% response rate can be a good ROI ...
Do I have "The Answer"? Sure! Of course I do ... Educate the entire planet!
But realistically, that ain't gonna happen soon.
So I block the malware hosting sites. Saves time & energy in the long run.