Because, according to Forbes, and Facebook itself, it’s still happening. As Forbes journalist Michael Nunez summed up, 'The companies sweeping changes have been largely ineffective'.
A year on from the scandal, Facebook admitted that roughly 100 developers may have improperly accessed user data. This means that revelations about Cambridge Analytica only exposed one small fraction of what is, in reality, an entire data market largely out of the reach of regulatory authorities.