It is interesting how this article starts. A guy has an app which drains users batteries. But it's not his fault of course, because it's the ad company. Except the ad company says it's not their fault, because the ad came from some other company.

This fingerpointing points to one of the core problems of the ad industry: They created a system where nobody knows who's responsible for anything, so malware and fraud has an easy time.

But this mode of thinking makes no sense. If you put ads in your app YOU are responsible. If you use an ad service from a shady company that outsources to other shady companies then you're still responsible.