This is about If someone intrudes into my pc while I'm using the pc and gets into my email or other program. It's not so much about if they (hackers) get in my email from a pc miles away but comments about that are welcome. So let's say I'm working on my pc in a graphics program and my net browsers are closed (Chrome and Edge.) And then they access my pc and open my email program: If that happened I could notice the browser icon in the program bar at the bottom of my screen right? Or I assume I could notice part or all of my browser window popping up. So then I could take action like closing the net browser and trying to find out who hacked in. If any of that is wrong or incomplete let me know. I have Win 10 Home on a I7 7700, Rtx 2080 Ti video card, 16gb ram, 2tb hhd. I also have a ATT Uverse dsl modem router which is their standard 4 port ethernet unit with wifi. Some of the 8 apartments in the building where I live also have wifi which may be with ATT or Spectrum or maybe another provider. But I have everything wired with ethernet lines in my apartment and I don't use wifi except maybe sometimes on my Galaxy S4 cell phone but not on my 2 pc systems. The 2 pcs were networked together at one time some months ago but currently I can't get one of them to show it's properly on the network. But my main questions are about if I'm playing a game offline like a single player game and it's full screen. Edit: and no other programs are running but my ethernet line is still plugged in. And if the same hacker as above opens my browser will I even notice it? Meaning will the browser show up as if I was doing an Alt-Tab from the game to the desktop? Or perhaps a screen flicker in the game is an indication that my browser or other program is being opened in the background? And speaking of the background can a hacker open a program on your pc in the background without any visual indicators like icons or windows appearing? I guess maybe there are specialized warning programs with their own visual or audio alerts for this sort of intrusion while gaming which I haven't really checked out yet. Edit: I see they are IDS programs and hopefully they work while gaming full screen. Maybe an external device? Or something.