I got a "pop up" while using my ipod 4th gen saying that the camera was hacked.

While I was using a reddit app on my ipod I got a "pop-up" (not sure what else to call them, but it looked like the pop-up you get when you get an imessage or something else ipod related) saying that my ipod camera has been hacked and that the hacker now has access to my photos, camera, etc. It said to click the "ok" button at the bottom to update your camera to fix the problem, which I did, but nothing happened. When I got back on the app later there was another pop-up similar to that one asking if I wanted to open the link using the reddit app (not sure if it was part of the hacking pop-up or something else, so I didn't open it). I've never seen something like this happen before and when I tried to google the problem I didn't find anything! My ipod isn't jailbroken and no one but me has had access to it. Has anyone else had this happen before? Do you think it was legitimate? What do I do to fix it?