This week, sportswear apparel retailer Under Armour became the latest U.S. company to make an announcement that no company wants to have to make—its systems had suffered a massive data breach.

The Baltimore-based company revealed Thursday that approximately 150 million users of its MyFitnessPal app, which allows users to track their diet and exercise, had been infiltrated in a February hack that was uncovered by parent company Under Armour on March 25.