Anecdote here: I was talking to a college student who hadn’t heard about the whole Cambridge Analytica to-do. Why? She uses Facebook to check the news, and unsurprisingly it wasn’t coming up on trending news.
Is your friend into tech news a lot? If not maybe that's why it wasn't shown. The only people I know who care about this story are tech people.
Don't like CNN nor FOX but still skim them for news, articles not TV nor videos.