As the title implies I got a pop-up onscreen while visiting How to install Desktop Environments on CentOS 7? a few minutes ago.
In and of itself it's not concerning. However, the header of the message was "Tehran, Iran" which DOES concern me. I went to screen print the page but accidentally moved the mouse out of focus which, of course, caused the message to lose focus.
I'm still in that page but I cannot recreate the message. Long story short, this is a heads up to stackexchange.