Join the Mozilla’s Test Days event from Dec 2–8 to test the new Firefox address bar on Firefox Beta 134 and get a chance to win Mozilla swag vouchers! 🎁

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Firefox gets caught by bitdefender antivirus or firewall

  • 3 iimpendulo
  • 3 inale ngxaki
  • 1 view
  • Impendulo yokugqibela ngu cor-el

more options

Every 20 minutes or so I get a notification from Bitdefender Online Threat Prevention module indicated it has blocked a suspicious connection. This has only started about 2-3 days ago. The only information the popup indicates is:

"firefox.exe attempted to establish a connection relying on an unmatching security certificate to gitcdn.xyz. We blocked the connection to keep your data safe since the used certificate was issued for a different web address than the targeted one."

I performed a full system scan and found nothing harmful. Anyone know what this is or how I can fix it?

Every 20 minutes or so I get a notification from Bitdefender Online Threat Prevention module indicated it has blocked a suspicious connection. This has only started about 2-3 days ago. The only information the popup indicates is: "firefox.exe attempted to establish a connection relying on an unmatching security certificate to gitcdn.xyz. We blocked the connection to keep your data safe since the used certificate was issued for a different web address than the targeted one." I performed a full system scan and found nothing harmful. Anyone know what this is or how I can fix it?

Isisombulu esikhethiweyo

Thanks for the info, Fred. I looked into the problem a bit deeper (it wasn't cause by Malwarebyte and still running the other tools to be safe) and found a few posts on Reddit that say it's a Firefox add-on, likely uBlock Origin, that is having some trouble updating its database. Other users running Bitdefender are having the same error pop up these last few days.

https://www.reddit.com/r/BitDefender/comments/m9d0io/gitcdnxyz/

Funda le mpendulo kwimeko leyo 👍 0

All Replies (3)

more options

You may have ad/mal-ware. Further information can be found in this article; https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-caused-malware?cache=no

Run most or all of the listed free to use malware scanners. Each works differently. If one program misses something, another may pick it up.

more options

Isisombululo esiKhethiweyo

Thanks for the info, Fred. I looked into the problem a bit deeper (it wasn't cause by Malwarebyte and still running the other tools to be safe) and found a few posts on Reddit that say it's a Firefox add-on, likely uBlock Origin, that is having some trouble updating its database. Other users running Bitdefender are having the same error pop up these last few days.

https://www.reddit.com/r/BitDefender/comments/m9d0io/gitcdnxyz/

more options