AntiCheat
AntiCheat development and support was discontinued September 7th, 2014. The previous page is archived here for reference purposes. Official downloads are still available for use as is the project source code. You must use these at your own risk as I can no longer vouch for their rate of success.
There's a "Reloaded" version of this project which has been updated for the newer versions and is under current development. You should give it a look if you're interested in continuing to use AntiCheat: http://dev.bukkit.org/bukkit-plugins/anticheatreloaded/
Thanks to everyone who has supported the AntiCheat project. Recently I have resigned my position as BukkitDev Team Lead and have decided to move on from Bukkit development. Unfortunately, this means that I will no longer be actively working on the AntiCheat source code, and as such I have decided to close the project.
Many thanks to JetBrains who have provided their IntelliJ IDE for development. Thanks to the many contributors to this project who's code helped do good in the community. Thanks to those of you who have provided your support in many different ways to the project: you know who you are, you made my life a lot better and I can't thank you enough for that. I am happy to say that this project has improved people's lives, and I couldn't have ever hoped to say more.
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Posted Dec 20, 2012I see other people commented on the "freezing client" bug, it is still not fixed on build 364.
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Posted Dec 20, 2012@Apple_columb did you test these sprint hax? Also in your pic i see nodus i think this rathack got this messagestacker right?
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Posted Dec 20, 2012@gravity_low oh wow i fail.
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Posted Dec 20, 2012@Apple_columb
still doesn't work.
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Posted Dec 20, 2012@Grave9912
@TheFluffey
Use latest dev build.
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Posted Dec 19, 2012Can you update to the latest recommended build 1.4.5 R1.0 2543 please?
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Posted Dec 19, 2012Ok, I use PEX and I have all the perms and the anticheat.check.exempt perm why does it still saying Im hacking, I recently updated to the 1.4.5 R1.0 build could that be why
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Posted Dec 19, 2012@gravity_low
Did you fix 'freezing client' yet?
If so, ignore this bit:
Players are getting kicked randomly and constantly for freezing client. It broadcasts their leave but does not message me anything, and simply kicks them for freezing client. It is definitely bugged. Just updated to latest dev build, I hope it is fixed.
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Posted Dec 19, 2012Hurrr... I disabled my "username left the game" messages via DisableMessage plugin. After installing AntiCheat this messages is back.

Btw, good job on antispider. NCP doesn't have it. Means a lot for parkour like maps. Also would be nice to have more vilation levels. Like 1, 2, 3, 4, 5.
On level 1 I would like to print warning message. Level 2 should wipe player inventory and send him to spawn. Level 3 is kick. Level 4 is ban for 20 minuts. And level 5 is permanent ban. And feature to disable some unwanted checks would be nice too.
And what does "Freezing client" kick reason means?
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Posted Dec 18, 2012@joehot200
You SHOULD be using an AntiCheat dev build. Spigot is an unofficial CraftBukkit, and I don't support it.
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Posted Dec 18, 2012@gravity_low
i am not using a dev build, i am using the latest release build.
23:33:53 [INFO] This server is running CraftBukkit version git-Spigot-jenkins-Spigot-325 (MC: 1.4.5) (Implement ing API version 1.4.5-R0.3-SNAPSHOT)
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Posted Dec 18, 2012Sprint (forever and ever) hack is still works. Player is able to look like he is running even if he doesn't move. And could you add more advanced punishament system? Per action&more than one custom auction? Like warn & warp to somewhere.
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Posted Dec 18, 2012@gravity_low
Oh ic thanks for the clarification
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Posted Dec 18, 2012@karatetoes
Sure, I know numerous people who do. Understand, however, that what you're getting is not the same thing as orebfuscator. In the same way AntiCheat does not straight-up block hacked clients and instead looks at their behavior to determine if they're hacking, the same goes for xray. This doesn't modify packets to make it impossible to xray, just uses a much more lightweight system to try and mathematically find out of they are doing so.
@MCBuncey
Anyone who reaches high level automatically gets taken down some when an action is executed so they have time to actually play before getting kicked again (because their level is so high that any mistake will get them kicked)
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Posted Dec 18, 2012is it possible to put multiple commands what i want is when it ban player temp his/her hack level goes back to zero
if not maybe and option soon?
Or maybe something like when the certain player hack level will slowly goes down to normal if no longer detecting any hacking activities basically forgiving him/her slowly until his/her hack level goes low again.
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Posted Dec 17, 2012So could i also use this as a replacement of orbfuscator as well?
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Posted Dec 17, 2012@joehot200
You click new issue...
If you're using an AntiCheat dev build, you should have a dev build of CraftBukkit as well. Please take note of the notifications I put on the builds, please. Quite frankly, if you don't read those, grab stuff off the server log, or know how to use github, you shouldn't be using dev builds.
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Posted Dec 17, 2012@gravity_low
well, i do not know how to use this weird github site.
btw i am getting massive spam in console
something to do with cant pass entityDamageByEntity event.
console is spitting errors too fast to get the error
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Posted Dec 16, 2012@Tallcraft
We're using github now, click the tickets button.
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Posted Dec 16, 2012Bugtracker is still down :/