Recently when starting the browser I've seen that Microsoft Defender blocks requests to one of my homepage shortcuts, due to it finding the URL suspicious. My question is as the title suggests: does Firefox ping the URLs or fetch metadata of said domains automatically/in the background to update the icons, website title, etc? It is always suspicious to find Microsoft Defender stating it blocks request to websites I haven't accessed in a while. So I'm trying to deduce if it is a feature and not a ghost in the wires...