Google disclosed a vulnerability in the Fortnite Mobile APK that allows a pre-installed malicious application to exploit the way the game installs for the first time in Samsung Galaxy devices. Thankfully, Epic has patched this vulnerability in the latest version of the installer but is not very happy about Google disclosing it prematurely.
https://www.notebookcheck.net/Fortnite-Mobile-installer-for-Android-found-to-contain-a-Man-in-the-Disk-exploit.325394.0.html