It's incomprehensible to me - after some time I just started parsing it as "Big Data, Cambridge Analytica, Brexit, Trump". It'd be better if it was just re-titled to use the article headline, I think.

We've updated the title from “Big Data Cambridge Analytica Brexit Trump”, but we're happy to change it again if someone can suggest something less click-baitey than the article's title.

It's words from the URL. I'm guessing they were used because the article headline isn't very descriptive.