Playing ads on non ad apps

[Android Central Question]

I have the samsung s8 and for the past couple weeks I'll be in apps that don't play ads, like Netflix or even Google maps, and an ad will pop up all of a sudden. Did I download an app that made this happen or what is going on??

 

[Rukbat]

Did I download an app that made this happen

Most likely. An app or a virus.