Windows 10: Firefox Quantum suspicious activity

Hi.
My Firefox browser auto-updated to quantum last night. I am willing to give it a try, even thought it doesn't support the addons I use. My issue is that every time I run FQ my internet security software (ESET) notifies me multiple times about two addresses its blocking. Could somebody explain what those are (malicious or not) and how I can prevent Firefox Quantum from doing that.
Posting screen shots of the addresses.
Notifications are in greek, so I translated
thanks in advance

:)

 

Firefox replaced by Firefox Quantum

> This is a virus, called 'Quantum'

firefox quantum - Recherche Google

> I can't seem to uninstall this 'Quantum' Firefox, and when I try to install the real Firefox, my computer doesn't seem to recognise the exe file extensions

Firefox Support

Firefox Help

Don

 

Defender utilization extremely high since Firefox Quantum update

Hi Darlene,

Thanks for your reply.

I didn't try your suggestion because I was having such horrible performance problems with the new Firefox Quantum release.

A little while ago, I uninstalled Quantum from my ThinkPad E545 and reinstalled the previous good release (56.0.2) that I had been running. Performance (cpu & mem usage) has returned to acceptable levels. And Windows Defender is no longer actively running.
I don't even see it running in the background in Task Manager.

Going back to a previous Firefox release may not be the best solution but it was the easiest workaround. I'm going to uninstall Firefox Quantum from my desktop PC which has the worst problem and which I'd originally reported above. I'll add an update/reply
once I've done that.

 

Hi.
I don't know if this is your problem, but I will tell you what I've seen on several systems from this Quantum update:

Common Situation:

• Systems themselves are 64-bit, originally using FF 32-bit
• Systems were auto-updated to 64-bit FF
• Systems were auto-upgraded to 64-bit Quantum

Problems started showing up with AV blocking FF-related files/executables/connections

What I found was, the FF auto-update from 32-bit to 64-bit FF, left some FF "active" executables in the Programs Files (x86) folder, which the 64-bit version was calling. This was creating the AV warnings.

I had to completely remove all FF instances from the system, clear it out of the registry, and reinstall Quantum clean. This solved the problem. Maybe it will work for you.

 

Thank you, I do have to try that I guess. Or maybe I will go back to Firefox 56. For the time being Quantum doesn't support DTA/DTAoc, or flashgot. Bulk MD is totally useless. I can't operate like this *Sad. I'll try quantum again in a month or so.

 

Good luck. Cheers!