Minecraft is one of the most popular sandbox games. As of January 2018, there were 74 million players around the world. However, only a part of the uploaded skin was modified, and most of them used the default skin, so only a small percentage of people were infected. Avast said that they blocked 14,500 infection attempts in 10 days.
Avast issues some unusual message sample that appears in the user inbox:
“You Are Nailed, Buy A New Computer This Is A Piece Of Sh*t”
“You have maxed your internet usage for a lifetime”
“Your a** got glued”
Finally, to protect yourself, you should use a power antivirus software.