we understand your frustration as we are having to "control alt delete" to stop our pc's from screaming "YOUR PC IS INFECTED! Alert, Call this number, this site is stealing your info"... I know its not infecting the PC but it locks up Edge.
You shouldn't be trying to hunt down these sites, the Edge team should be fixing this and it should be a #1 priority so it can't happen like with Chrome/Firefox... You should be banging on the door of the Edge team going FIX THIS NOW.
This is why hundreds of thousands of people leave Edge and get firefox/Chrome everyday.
If MS doesn't care about Edge then seriously cancel it and bundle Windows with Chrome.
It doesn't even look like MS uses Edge... its sad really.
I've downloaded uBlock Origin to both my PC and then it automatically (SYNC?????) puts a blocker into your phone!!!!!! (Yes, I know!!!) There are different downloads for Google, Opera, Firefox, IE etc. They were suggested by several participants in this thread as well as the "experts" at Malwarebytes. Biggest problem is I can't find a guide or figure out how to utilize uBlock. I think I've adjusted some things-accidently on purpose-but basically have no clue. I don't know what's up at Mbytes!! They used to be very responsive. But, like MS they have also had "personnel" adjustments. Maybe even new owners??????
So I'm just going to keep doing what I usually do with my PC. Or actually, what my PC lets me do!!!!! I foresee that it eventually will go out the window, followed by my "smartphone."