https://www.bleepingcomputer.com/news/security/microsoft-khonsari-ransomware-hits-self-hosted-minecraft-servers/ > Microsoft urges admins of self-hosted Minecraft servers to upgrade to the latest release to defend against Khonsari ransomware attacks exploiting the critical Log4Shell security vulnerability. > Mojang Studios, the Swedish video game developer behind Minecraft, released an emergency security update last week to address the bug tracked as CVE-2021-44228 in the Apache Log4j Java logging library(used by the game's Java Edition client and multiplayer servers).