Having the shield icon always available (on desktop in this case) is great
However, having it popup a text on hover is (at least for me) very annoying because I trigger that too often just by just moving the mouse over it "by mistake".
Maybe a click should be necessary to activate the shield icon, and / or the text could vanish when the mouse get out of its area?
At the moment one is obliged to click on the close button to make the text popup disappear.