!!!URGENT: BAD VIRUS GOING AROUND, PLEASE READ!!!
This is ScorecardResearch. A terrible virus, an awful popup, & something that should be avoided at all costs.
Be careful of the malicious websites you go on. One of them may install behind your back this popup. ScorecardResearch is a dangerous pop-up virus. It seems legit, right? But why would something just pop up without your permission? I received this twice. After the second time, I decided to look into it.
I started noticing that whenever I loaded a page, Chrome would have this at the bottom:

Why is this working behind the scenes of my browser?
According to BotCrawl.com, this is what ScorecardResearch is:
“ScorecardResearch.com, including b.scorecardresearch.com, and Scorecard Research surveys are categorized as severe malware, and is most noted to be connected to a Trojan infection that attempts to disguise as a legitimate marketing research group collecting anonymous data and information about the user’s internet activity, usage, etc.”
Do not click into this. Don’t touch anything. Close the tab immediately. Go through all your programs, addons, etc, & delete anything suspicious. Scan your computer, delete your cookies & clear your cache, do whatever it takes. You can read more here.
tl;dr — Do not trust ScorecardResearch. This thing will fuck you over.