My Realm Gets Hacked by Hackers

Hello Mojang, I'd like to report a bug. Hackers, use this hack called "Horion" on Windows 10 and on Android/Mobile there is also this app called "Toolbox" which allows you to hack on the Game. Hackers use those on My Realm and they Spawn in these Premade Kits in a Shulker Box or Chest. There is also this Issue called Command Block Exploit where Hackers can write data onto Command Block Minecarts, Beehives, Beenests, Moving_Block. Please take a look into this Cause this Issue has been going on for Quite along time.