Problems with blocked internet connection

I get this message all the time from Bitdefender

firefox.exe hat versucht, auf Grundlage eines abgelaufenen Zertifikats eine Verbindung mit adfdsaf.ow.truesteamachievements.com aufzubauen


English:

firefox.exe attempted to connect to adfdsaf.ow.truesteamachievements.com based on an expired certificate

and that it has been blocked. The website HAS an expired certificate, but i have never tried to open the site. It happens most of the time while the computer is running and im not even on the pc. And it seems to happen around 2 am. That being said, scanned my system with bitdefender, windows defender and 2 other second opinion scanners. Nothing found. I don`t get whats happening here and why. I disabled most of my firefox addons, but i only had big ones where i thought they were not malware.

Anyone having an idea?


Thanks for any help!

Answers