Infection but not listed in Quarantine

Today, several times, I had a popup that something had been blocked, and the popup disappears before I can even read the link (the whole link isn't there anyway). I look in Quarantine and do not see a file that looks like the one I read. Is it a fake attack, or is something wrong with my Quarantine?

Hi Valorie, 

We will check this for you.
Could you share us the screenshot of that pop up? 
Refer this article for the steps to capture the screenshot : https://bit.ly/2Y6RCDP
You can post the screenshot here in your topic. Click on 'Answer' & then click on the 'Image' [mountain symbol] & follow the instructions.