Check Point researchers have discovered multiple security vulnerabilities in Fortnite, a massively popular online battle game. One of which could have allowed remote attackers to completely takeover player accounts just by tricking users into clicking a specially crafted web link. The Fortnites game lets its players log in to their accounts using third-party Single Sign-On (SSO) providers, such as Facebook, Google, Xbox, and PlayStation accounts. The vulnerabilities were fixed in mid-December by Epic Games’ developer, Check Point.
Source: https://thehackernews.com/2019/01/fortnite-account-hacked.html