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Basic guide to catching hackers on Vanilla servers

megaCOOL1 6/4/17 5:20 pm
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Obviously, you can't keep an eye on all players. That's when this handy little guide comes in. If you own a server, and are having trouble with hackers, read on! This guide makes use of the server console in order to catch hackers.

Catch people flying:
Click to reveal
Look for players that have been kicked for floating too long. This is what you should find in the server console:
[21:52] [Server thread/WARN]: megaCOOL1 was kicked for floating too long!
[21:52] [Server thread/INFO]: megaCOOL1 lost connection: TextComponent{text='Flying is not enabled on this server', siblings=[], style=Style{hasParent=false, color=null, bold=null, italic=null, underlined=null, obfuscated=null, clickEvent=null, hoverEvent=null, insertion=null}}
[21:52] [Server thread/INFO]: megaCOOL1 left the game
[21:52] [Server thread/WARN]: handleDisconnection() called twice

Any of these messages should indicate somebody using Fly or Jetpack


Catch people speeding:
Click to reveal
Look for messages that tell you if a player moved too quickly. This is what you should find in the server console:
[21:52] [Server thread/WARN]: megaCOOL1 moved too quickly! -8.332041314093672,1.021599998474116,-6.05410023230894


How to be absolutely sure that somebody is hacking:
Click to reveal
1) Make yourself invisible
2) TP to them (or set up a repeating command block to gain their field of view)
3) Observe their behaviour.
If it seems suspicious, you can decide whether to ban them or not.


Overall, this is a basic guide. It is incomplete and will be expanded.
Sometimes, it's useful for a member of staff themselves to use a hacked client just to help catch hackers, although be careful that other members of staff know that. I used the Wurst hacked client in this example. (I also got banned for hacking on a Vanilla server).
I hope you all find this useful!
Posted by
megaCOOL1
Level 8 : Apprentice Network
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