Copyright infringement was never stealing to begin with. If I steal your pencil, you are no longer in posession of it. If I copy or download your pencil, we both have a copy, and you are not deprived of your property.

The source article from a security researcher Felix Krause:

https://krausefx.com/blog/announcing-inappbrowsercom-see-what-javascript-commands-get-executed-in-an-in-app-browser