Bitdefender warning sync.teamrtb.net.?

Hi.
The past 3 days I am getting notifications in Bitdefender as below .

A: Suspicious connection blocked 21 minutes ago Feature: Online Threat Prevention firefox.exe attempted to establish a connection relying on an expired certificate to sync.teamrtb.net. We blocked the connection to keep your data safe since web pages must renew their certificates with a certification authority to stay current, and outdated security certificates represent

I have done full scan and no virus on my computer.
Does any body know what this is and should I be worried about it? started 3 days ago from nowhere.
Running windows 10 home 64.
malware bytes premium.
Gaming pc.
Any ideas.
sam.
 
expired certificate to sync.teamrtb.net
That's the whole story; the cert needs to be updated.

However, I'm an avid FF user on Win/7 Pro SP1 w/o such an error ( I also don't use bitdefender)
 
That's the whole story; the cert needs to be updated.

However, I'm an avid FF user on Win/7 Pro SP1 w/o such an error ( I also don't use bitdefender)
Thanks for the reply.
But I never visited that site or never heard of it before.
Thinking virus or trojan on pc.
Or just paranoid.?
Samual.
 
Likely 3rd party cookie. HOWEVER it's from Russia!
$ whois teamrtb.net
Domain Name: TEAMRTB.NET
Registry Domain ID: 2021786244_DOMAIN_NET-VRSN
Registrar WHOIS Server: whois.nic.ru
Registrar URL: http://nic.ru
Updated Date: 2019-04-13T22:36:12Z
Creation Date: 2016-04-15T11:18:42Z
Registry Expiry Date: 2020-04-15T11:18:42Z
Registrar: Regional Network Information Center, JSC dba RU-CENTER
Registrar IANA ID: 463
Registrar Abuse Contact Email: tld-abuse@nic.ru
Registrar Abuse Contact Phone: +7 (495) 994-46-01
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: NS1.AD.TEAM
Name Server: NS2.AD.TEAM
Name Server: NS3.AD.TEAM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
I would clear all browser data, cache & cookies, quit the browser and relaunch
 
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