The cyber security breaches have become a major threat for internet users, with millions of personal data records being exposed daily. The recent incident of MyFitnessPal's data security breach in March 2018 affected over 150 million users, compromising their names, email addresses, and passwords. Although the financial details were not compromised, the exposure of personal data can have devastating effects. The study discusses the nature of the problem, how and why it occurred, and what could have been done to prevent it.