Spigot: https://www.spigotmc.org/resources/opguard.23200/
OpGuard is a Spigot plugin that protects against op exploits & malicious plugins. It achieves this by maintaining a
list of verified operators and overriding the Bukkit implementation of /op and /deop with its own command: /opguard.
v4.x.xreleases target Java 11v3.x.xand prior targeted Java 8
