Yago Hansen, ethical hacker: “Data leaks affect the prestige, business and value of the companies that suffer them.” Every year thousands of massive data leaks occur in the world, affecting large corporations around the planet. If you enter the term “data leak” in Google, you can see that it is a more common and widespread problem than it seems. The last major data leak we have known is that of Facebook at the hands of Cambridge Analytica. But before they were news for this reason Uber, Equifax, Yahoo !, Sony or Ashley Madison.