Something that has nothing to do with sideloading or even Android?

Wrong link above:

https://www.cnet.com/news/fortnites-battle-royale-with-andro...

A storm of security issues is closing in on the Android version of Fortnite. And it isn't likely to pass anytime soon.

Developer Epic Games just fixed a security flaw with Fortnite's installer for Android devices, but researchers are expecting a flurry of problems for the online game as it gets more popular on Android.

That's because Fortnite isn't available through Google's Play Store. Epic instead chose an unorthodox -- and more dangerous -- route for the game's fans. Rather than download it through the official Google app store, players need to download the game and "sideload" the app on their Android devices instead.