Medusa AntiCheat Lite v1.5.7

Free | Open Source | Effective | Quick Detection | 1.7-1.12.2

  1. GladUrBad
    Native Minecraft Version:
    Legacy (< 1.13)
    Tested Minecraft Versions:
    • 1.7
    • 1.8
    • 1.9
    • 1.10
    • 1.11
    • 1.12
    Source Code:
    https://github.com/GladUrBad/Medusa
    Contributors:
    GladUrBad (Main Dev), frep (Contributor) , Tecnio (Contributor), Elevated (Contributor), retrooper (PacketEvents Dev), Sms_Gamer (Contributor), funkemunky (Contributor)
    OVERVIEW
    Medusa is a simple, free, open-source anti-cheat solution for 1.7-1.12.2 servers (1.9+ support still experimental). Because of this anti-cheat being open sourced, you can modify Medusa to fit your needs better.

    COMPATIBLE VERSIONS

    (Tested)
    -1.7.x
    -1.8.x

    (Compatible but experimental)
    -1.9.x
    -1.10.x
    -1.11.x
    -1.12.x

    PACKET API
    Medusa uses PacketEvents by retrooper.
    Check it out here.


    LICENSE
    Medusa is licensed under the GPLv3 License.

    SUPPORT
    Basic support is offered for Medusa Anticheat here.


    CHEATS DETECTED
    • AimAssist (7 checks)
    • Autoclicker (4 checks)
    • Killaura (5 checks)
    • Hitboxes/Reach (3 checks)
    • Velocity (2 checks)
    • Fly/NoFall (6 checks)
    • Jesus (2 checks)
    • Motion (4 checks)
    • Speed (3 checks)
    • FastClimb (1 check)
    • Protocol (10 checks)
    • Hand/Interaction (3 checks)
    • Scaffold (1 check)
    • Timer (3 checks)
    DEMOS




    PERMISSIONS

    • medusa.alerts - Allows you to see alerts when players cheat.
    • medusa.logs - Allows you to see session logs for the player.
    • medusa.commands - Allows you to run commands.
    INSTALLATION
    Simply download the Medusa.jar file by clicking the download button on this page, and drag it into your server "plugins" folder, then start your server.

    EXTRA INFO:
    • Medusa may not work properly if you reload the plugin.
    COMPATIBLE SPIGOTS:
    • Spigot
    • PaperSpigot
    • Tuinity
    • FoxSpigot
    INCOMPATIBLE SPIGOTS:
    • aSpigot
    • mSpigot

Recent Reviews

  1. K0itoyuu
    K0itoyuu
    4/5,
    Version: v1.5.7
    report a noslowdown bypass source
    use FDPClient Vulcan NoSlow and slowdown event write C0B StopSpring can bypass noslowdown check
  2. KnowItAllNet
    KnowItAllNet
    5/5,
    Version: v1.5.7
    An excellent anti-cheat, but flying in creative mode is also flagged by the anti-cheat, other than that, its truly amazing!
  3. Zaidimuksas
    Zaidimuksas
    5/5,
    Version: v1.5.7
    Please Updatee to 1.17 I beg please please I beg reviews say it's very good asdasd a
  4. Cccooc
    Cccooc
    5/5,
    Version: v1.5.7
    Is the author back? Great anti cheating, hope not to leave again.I'm looking forward to the next version :)))
  5. Cccooc
    Cccooc
    5/5,
    Version: v1.5.6
    Very good anti cheating, but why didn't he update.. I hope the author can come back :(
  6. TecnioDev
    TecnioDev
    5/5,
    Version: v1.5.6
    AntiCheat very good very smart dev you should get this ac its very good gladurbad very good dev
  7. Killeurdu2b
    Killeurdu2b
    5/5,
    Version: v1.5.6
    Amazing Anticheat, amazing developer.
    I'm looking forward to 1.6.
    Please update the discord link.
    1. GladUrBad
      Author's Response
      Hi Killeurdu2b. Thanks for reviewing Medusa! The discord links have been updated. :)
  8. Unique_Guy
    Unique_Guy
    4/5,
    Version: v1.5.6
    The reach check is probably the best you'll find inside a free anti-cheat currently.

    Here are some statistics I obtained about the reach check after conducting some tests against the StrikePractice "Hard" Bot using default Medusa settings:

    False positives per 5000 legit hits (140-160ms): 0
    False positives per 5000 legit hits (1000+-50ms): 2
    False positives per 5000 legit hits (Clumsy Throttle: 125ms, 10% Chance): 5

    Lowest detection (140-160ms): 3.5 Reach (3 Alerts)
    Lowest detection (1000+-50ms): 3.4 Reach (1 Alert)
    Lowest detection (Clumsy Throttle: 125ms, 10% Chance): 3.25 (3 Alerts)

    The detections were tested by using correctly calculated reach at different values. The sample size was 50 reach hits. The lowest value I tested was 3.15.

    Here's how Medusa's reach check compares detection wise against other anti-cheats that I've tested (140-160ms):
    https://i.gyazo.com/09287667550a12584f863b492c36134f.png

    And here's how it compares against Verus (1000+-50ms):
    https://i.gyazo.com/dd1dccc492b7029359e3a05f5c6c2678.png

    It's important to note that Verus was not tested against the StrikePractice "Hard" bot but a real player.


    I also have to mention that Medusa's movement checks produced quite a lot of false positives especially with higher latency.
    Some aim checks also were producing false positives when teleporting so you'd definitely need to mess around with the config.
    1. GladUrBad
      Author's Response
      Wow, this is probably the best review I have ever seen on Spigot. I appreciate this so much!
  9. GradientGamer
    GradientGamer
    4/5,
    Version: v1.5.6
    AC is good but it miss hits people
    i get flags when people respawn or go to another world (Multiverse)
    overall its good
    1. GladUrBad
      Author's Response
      Hi GradientGamer. Thanks for reviewing Medusa! I will be sure to fix this issue before the 1.6 Free version release.
  10. FireRoz
    FireRoz
    5/5,
    Version: v1.5.6
    Excellent.
    It false flags a lot but as long as you disable the right checks then you're good.
    It supports most of the common hacks, I would love to see ping spoofing support as a normal human being cannot detect it.
    I don't know how ping spoofing works but I know some anticheats can detect it so, it is possible.
    1. GladUrBad
      Author's Response
      I appreciate it. 1.6 is coming, it will have many better checks/code and new checks such as Phase, PingSpoof and Strafe will be added.