diff --git a/CommonCore/SQL/src/de/steamwar/sql/AuditLog.java b/CommonCore/SQL/src/de/steamwar/sql/AuditLog.java
new file mode 100644
index 00000000..ffe093a0
--- /dev/null
+++ b/CommonCore/SQL/src/de/steamwar/sql/AuditLog.java
@@ -0,0 +1,125 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2020  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.sql;
+
+import de.steamwar.sql.internal.Field;
+import de.steamwar.sql.internal.SqlTypeMapper;
+import de.steamwar.sql.internal.Statement;
+import de.steamwar.sql.internal.Table;
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.NonNull;
+
+import java.sql.Timestamp;
+import java.time.Instant;
+
+@AllArgsConstructor
+public class AuditLog {
+
+    static {
+        SqlTypeMapper.nameEnumMapper(AuditLog.Type.class);
+    }
+
+    public static final String SERVER_NAME_VELOCITY = "Velocity";
+
+    private static final Table<AuditLog> table = new Table<>(AuditLog.class);
+
+    private static final Statement create = table.insertFields(true, "time", "serverName", "serverOwner", "actor", "actionType", "actionText");
+
+    @Getter
+    @Field
+    private final Timestamp time;
+
+    @Getter
+    @Field
+    private final String serverName;
+
+    @Field(nullable = true)
+    private final int serverOwner;
+
+    @Field
+    private final int actor;
+
+    @Getter
+    @Field
+    private final Type actionType;
+
+    @Getter
+    @Field
+    private final String actionText;
+
+    public enum Type {
+        JOIN,
+        LEAVE,
+        COMMAND,
+        SENSITIVE_COMMAND,
+
+        CHAT,
+        GUI_OPEN,
+        GUI_CLOSE,
+        GUI_CLICK,
+    }
+
+    private static void create(String serverName, SteamwarUser serverOwner, SteamwarUser actor, Type actionType, String text) {
+        create.insertGetKey(Timestamp.from(Instant.now()), serverName, serverOwner, actor, actionType, text);
+    }
+
+    public static void createJoin(@NonNull String jointServerName, SteamwarUser serverOwner, @NonNull SteamwarUser joinedPlayer) {
+        create(jointServerName, serverOwner, joinedPlayer, Type.JOIN, "");
+    }
+
+    public static void createLeave(@NonNull String leftServerName, SteamwarUser serverOwner, @NonNull SteamwarUser joinedPlayer) {
+        create(leftServerName, serverOwner, joinedPlayer, Type.LEAVE, "");
+    }
+
+    public static void createCommand(@NonNull String serverName, SteamwarUser serverOwner, SteamwarUser player, @NonNull String command) {
+        if (player == null) return;
+        create(serverName, serverOwner, player, Type.COMMAND, command);
+    }
+
+    public static void createSensitiveCommand(@NonNull String serverName, SteamwarUser serverOwner, SteamwarUser player, @NonNull String command) {
+        if (player == null) return;
+        create(serverName, serverOwner, player, Type.SENSITIVE_COMMAND, command);
+    }
+
+    public static void createChat(@NonNull String serverName, SteamwarUser serverOwner, @NonNull SteamwarUser chatter, @NonNull String chat) {
+        create(serverName, serverOwner, chatter, Type.CHAT, chat);
+    }
+
+    public static void createGuiOpen(@NonNull String serverName, SteamwarUser serverOwner, @NonNull SteamwarUser player, @NonNull String guiName) {
+        create(serverName, serverOwner, player, Type.GUI_OPEN, guiName);
+    }
+
+    public static void createGuiClick(@NonNull String serverName, SteamwarUser serverOwner, @NonNull SteamwarUser player, @NonNull String guiName, @NonNull String clickType, int slot, @NonNull String itemName) {
+        create(serverName, serverOwner, player, Type.GUI_CLICK, "Gui: " + guiName + "\nSlot: " + slot + "\nClickType: " + clickType + "\nItemName: " + itemName);
+    }
+
+    public static void createGuiClose(@NonNull String serverName, SteamwarUser serverOwner, @NonNull SteamwarUser player, @NonNull String guiName) {
+        create(serverName, serverOwner, player, Type.GUI_CLOSE, guiName);
+    }
+
+    public SteamwarUser getServerOwner() {
+        return SteamwarUser.get(serverOwner);
+    }
+
+    public SteamwarUser getActor() {
+        return SteamwarUser.get(actor);
+    }
+}
diff --git a/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java b/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java
index d181ce02..11cac3fe 100644
--- a/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java
+++ b/FightSystem/FightSystem_Core/src/de/steamwar/fightsystem/FightSystem.java
@@ -68,6 +68,11 @@ public class FightSystem extends JavaPlugin {
             Core.setInstance(this);
             TinyProtocol.init();
         }
+        if (Config.SpectatePort != 0) {
+            Core.setServerName("Spectate");
+        } else if (Config.ReplayID != 0) {
+            Core.setServerName("Replay");
+        }
 
         message = new Message("de.steamwar.fightsystem.FightSystem", FightSystem.class.getClassLoader());
 
diff --git a/LegacyBauSystem/src/de/steamwar/bausystem/BauSystem.java b/LegacyBauSystem/src/de/steamwar/bausystem/BauSystem.java
index 56af8fd7..6712e45a 100644
--- a/LegacyBauSystem/src/de/steamwar/bausystem/BauSystem.java
+++ b/LegacyBauSystem/src/de/steamwar/bausystem/BauSystem.java
@@ -53,6 +53,7 @@ public class BauSystem extends JavaPlugin implements Listener {
 
     @Override
     public void onEnable() {
+        Core.setServerName("Dev");
         plugin = this;
 
         Mapper.init();
diff --git a/LobbySystem/src/de/steamwar/lobby/LobbySystem.java b/LobbySystem/src/de/steamwar/lobby/LobbySystem.java
index 4d198d4b..900d0941 100644
--- a/LobbySystem/src/de/steamwar/lobby/LobbySystem.java
+++ b/LobbySystem/src/de/steamwar/lobby/LobbySystem.java
@@ -19,6 +19,7 @@
 
 package de.steamwar.lobby;
 
+import de.steamwar.core.Core;
 import de.steamwar.entity.REntityServer;
 import de.steamwar.lobby.command.FlyCommand;
 import de.steamwar.lobby.command.HologramCommand;
@@ -52,6 +53,7 @@ public class LobbySystem extends JavaPlugin {
         message = new Message("de.steamwar.lobby.LobbySystem", getClassLoader());
         entityServer = new REntityServer();
         debugEntityServer = new REntityServer();
+        Core.setServerName("Lobby");
 
         CustomMap.init();
 
diff --git a/SpigotCore/SpigotCore_Main/src/de/steamwar/command/CaseInsensitiveCommandsListener.java b/SpigotCore/SpigotCore_Main/src/de/steamwar/command/CaseInsensitiveCommandsListener.java
index a829308a..05eafdbb 100644
--- a/SpigotCore/SpigotCore_Main/src/de/steamwar/command/CaseInsensitiveCommandsListener.java
+++ b/SpigotCore/SpigotCore_Main/src/de/steamwar/command/CaseInsensitiveCommandsListener.java
@@ -19,6 +19,10 @@
 
 package de.steamwar.command;
 
+import de.steamwar.core.Core;
+import de.steamwar.providers.BauServerInfo;
+import de.steamwar.sql.AuditLog;
+import de.steamwar.sql.SteamwarUser;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
@@ -31,5 +35,6 @@ public class CaseInsensitiveCommandsListener implements Listener {
         String[] strings = event.getMessage().split(" ");
         strings[0] = strings[0].toLowerCase();
         event.setMessage(String.join(" ", strings));
+        AuditLog.createCommand(Core.getServerName(), BauServerInfo.getOwnerUser(), SteamwarUser.get(event.getPlayer().getUniqueId()), event.getMessage());
     }
 }
diff --git a/SpigotCore/SpigotCore_Main/src/de/steamwar/core/Core.java b/SpigotCore/SpigotCore_Main/src/de/steamwar/core/Core.java
index c2086b0b..91c05851 100644
--- a/SpigotCore/SpigotCore_Main/src/de/steamwar/core/Core.java
+++ b/SpigotCore/SpigotCore_Main/src/de/steamwar/core/Core.java
@@ -33,6 +33,8 @@ import de.steamwar.network.handlers.ServerDataHandler;
 import de.steamwar.sql.SchematicNode;
 import de.steamwar.sql.SteamwarUser;
 import de.steamwar.sql.internal.Statement;
+import lombok.Getter;
+import lombok.Setter;
 import org.bukkit.Bukkit;
 import org.bukkit.command.CommandSender;
 import org.bukkit.event.Listener;
@@ -52,12 +54,17 @@ public class Core extends JavaPlugin {
 		return Reflection.MAJOR_VERSION;
 	}
 
+	@Getter
+	@Setter
 	private static JavaPlugin instance;
-	public static JavaPlugin getInstance() {
-		return instance;
-	}
-	public static void setInstance(JavaPlugin instance) {
-		Core.instance = instance;
+
+	@Getter
+	private static String serverName = "";
+
+	public static void setServerName(String serverName) {
+		if (serverName.isEmpty()) {
+			Core.serverName = serverName;
+		}
 	}
 
 	private ErrorHandler errorHandler;
@@ -66,6 +73,7 @@ public class Core extends JavaPlugin {
 	@Override
 	public void onLoad() {
 		setInstance(this);
+		serverName = System.getProperty("serverName", "");
 	}
 	
 	@Override
diff --git a/SpigotCore/SpigotCore_Main/src/de/steamwar/core/events/PlayerJoinedEvent.java b/SpigotCore/SpigotCore_Main/src/de/steamwar/core/events/PlayerJoinedEvent.java
index 29b0ffd8..d3fd33a0 100644
--- a/SpigotCore/SpigotCore_Main/src/de/steamwar/core/events/PlayerJoinedEvent.java
+++ b/SpigotCore/SpigotCore_Main/src/de/steamwar/core/events/PlayerJoinedEvent.java
@@ -19,6 +19,9 @@
 
 package de.steamwar.core.events;
 
+import de.steamwar.core.Core;
+import de.steamwar.providers.BauServerInfo;
+import de.steamwar.sql.AuditLog;
 import de.steamwar.sql.SteamwarUser;
 import de.steamwar.sql.UserPerm;
 import de.steamwar.sql.internal.Statement;
@@ -44,12 +47,14 @@ public class PlayerJoinedEvent implements Listener{
 			player.setDisplayName(prefix.getColorCode() + player.getName() + "§r");
 
 		event.setJoinMessage("§a§l» §r" + player.getDisplayName());
+		AuditLog.createJoin(Core.getServerName(), BauServerInfo.getOwnerUser(), user);
 	}
 	
-	@EventHandler
+	@EventHandler(priority = EventPriority.LOWEST)
 	private void onQuit(PlayerQuitEvent event) {
 		Player player = event.getPlayer();
 
 		event.setQuitMessage("§c§l« §r" + player.getDisplayName());
+		AuditLog.createLeave(Core.getServerName(), BauServerInfo.getOwnerUser(), SteamwarUser.get(player.getUniqueId()));
 	}
 }
diff --git a/SpigotCore/SpigotCore_Main/src/de/steamwar/inventory/SWInventory.java b/SpigotCore/SpigotCore_Main/src/de/steamwar/inventory/SWInventory.java
index 001fae9f..1b4529d3 100644
--- a/SpigotCore/SpigotCore_Main/src/de/steamwar/inventory/SWInventory.java
+++ b/SpigotCore/SpigotCore_Main/src/de/steamwar/inventory/SWInventory.java
@@ -20,7 +20,9 @@
 package de.steamwar.inventory;
 
 import de.steamwar.core.Core;
-import de.steamwar.core.TrickyTrialsWrapper;
+import de.steamwar.providers.BauServerInfo;
+import de.steamwar.sql.AuditLog;
+import de.steamwar.sql.SteamwarUser;
 import org.bukkit.Bukkit;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
@@ -145,6 +147,7 @@ public class SWInventory implements Listener {
             Bukkit.getPluginManager().registerEvents(this, Core.getInstance());
             open = true;
         }
+        AuditLog.createGuiOpen(Core.getServerName(), BauServerInfo.getOwnerUser(), SteamwarUser.get(player.getUniqueId()), title);
     }
 
     @EventHandler
@@ -156,6 +159,7 @@ public class SWInventory implements Listener {
             e.setCancelled(true);
             Core.getInstance().getLogger().info("[SWINV] " + e.getWhoClicked().getName() + " " + e.getClick().name() + " clicked " + e.getRawSlot() + " on " + (e.getCurrentItem() != null ? e.getCurrentItem().getItemMeta().getDisplayName() : "[EMPTY]") + " in " + e.getView().getTitle());
             callbacks.get(e.getRawSlot()).accept(e);
+            AuditLog.createGuiClick(Core.getServerName(), BauServerInfo.getOwnerUser(), SteamwarUser.get(player.getUniqueId()), e.getView().getTitle(), e.getClick().name(), e.getRawSlot(), (e.getCurrentItem() != null ? e.getCurrentItem().getItemMeta().getDisplayName() : "[EMPTY]"));
         }
     }
 
@@ -167,8 +171,10 @@ public class SWInventory implements Listener {
         InventoryClickEvent.getHandlerList().unregister(this);
         InventoryCloseEvent.getHandlerList().unregister(this);
         Core.getInstance().getLogger().info("[SWINV] " + player.getName() + " closed " + title);
-        if(callbacks.containsKey(-1))
+        if(callbacks.containsKey(-1)) {
             callbacks.get(-1).accept(null);
+        }
         open = false;
+        AuditLog.createGuiClose(Core.getServerName(), BauServerInfo.getOwnerUser(), SteamwarUser.get(player.getUniqueId()), title);
     }
 }
diff --git a/SpigotCore/SpigotCore_Main/src/de/steamwar/providers/BauServerInfo.java b/SpigotCore/SpigotCore_Main/src/de/steamwar/providers/BauServerInfo.java
index ddc7839e..309db835 100644
--- a/SpigotCore/SpigotCore_Main/src/de/steamwar/providers/BauServerInfo.java
+++ b/SpigotCore/SpigotCore_Main/src/de/steamwar/providers/BauServerInfo.java
@@ -19,6 +19,7 @@
 
 package de.steamwar.providers;
 
+import de.steamwar.sql.SteamwarUser;
 import org.bukkit.Bukkit;
 
 public class BauServerInfo {
@@ -37,4 +38,9 @@ public class BauServerInfo {
     public static boolean isBauServer() {
         return bauOwner != null;
     }
+
+    public static SteamwarUser getOwnerUser() {
+        if (bauOwner == null) return null;
+        return SteamwarUser.get(bauOwner);
+    }
 }
diff --git a/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java b/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java
index d295d62b..058771e7 100644
--- a/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java
+++ b/VelocityCore/src/de/steamwar/velocitycore/ServerStarter.java
@@ -276,6 +276,7 @@ public class ServerStarter {
 
                 int port = portrange.freePort();
                 String serverName = serverNameProvider.apply(port);
+                arguments.put("serverName", serverName);
 
                 if(node == null) {
                     node = Node.getNode();
diff --git a/VelocityCore/src/de/steamwar/velocitycore/listeners/ChatListener.java b/VelocityCore/src/de/steamwar/velocitycore/listeners/ChatListener.java
index 17137bf5..dfdf5c7f 100644
--- a/VelocityCore/src/de/steamwar/velocitycore/listeners/ChatListener.java
+++ b/VelocityCore/src/de/steamwar/velocitycore/listeners/ChatListener.java
@@ -27,6 +27,8 @@ import com.velocitypowered.api.event.player.PlayerChatEvent;
 import com.velocitypowered.api.event.player.TabCompleteEvent;
 import com.velocitypowered.api.proxy.ConsoleCommandSource;
 import com.velocitypowered.api.proxy.Player;
+import com.velocitypowered.api.proxy.ServerConnection;
+import com.velocitypowered.api.proxy.server.ServerInfo;
 import de.steamwar.messages.Chatter;
 import de.steamwar.messages.ChatterGroup;
 import de.steamwar.messages.Message;
@@ -80,17 +82,32 @@ public class ChatListener extends BasicListener {
         if(VelocityCore.getProxy().getCommandManager().hasCommand(cmd)) {
             CommandSource source = e.getCommandSource();
             String name;
-            if(source instanceof Player player)
+            SteamwarUser user = null;
+            if (source instanceof Player player) {
+                user = SteamwarUser.get(player.getUniqueId());
                 name = player.getUsername();
-            else if(source instanceof ConsoleCommandSource)
+            } else if (source instanceof ConsoleCommandSource) {
+                user = SteamwarUser.get(-1);
                 name = "«CONSOLE»";
-            else
+            } else {
                 name = source.toString();
+            }
 
             if (noLogCommands.contains(cmd)) {
                 return;
             }
 
+            switch (cmd) {
+                case "msg":
+                case "r":
+                case "tc":
+                    AuditLog.createSensitiveCommand(AuditLog.SERVER_NAME_VELOCITY, null, user, "/" + command);
+                    break;
+                default:
+                    AuditLog.createCommand(AuditLog.SERVER_NAME_VELOCITY, null, user, "/" + command);
+                    break;
+            }
+
             cmdLogger.log(Level.INFO, "%s -> executed command /%s".formatted(name, command));
         } else if (e.getCommandSource() instanceof Player player) {
             // System.out.println("spoofChatInput " + e);
@@ -106,8 +123,8 @@ public class ChatListener extends BasicListener {
 
         e.setResult(PlayerChatEvent.ChatResult.denied());
 
+        SteamwarUser user = SteamwarUser.get(player.getUniqueId());
         if (message.contains("jndi:ldap")) {
-            SteamwarUser user = SteamwarUser.get(player.getUniqueId());
             PunishmentCommand.ban(user, Punishment.PERMA_TIME, "Versuchte Exploit-Ausnutzung", SteamwarUser.get(-1), true);
             VelocityCore.getLogger().log(Level.SEVERE,  "%s %s wurde automatisch wegen jndi:ldap gebannt.".formatted(user.getUserName(), user.getId()));
             return;
@@ -117,13 +134,20 @@ public class ChatListener extends BasicListener {
             return;
 
         Subserver subserver = Subserver.getSubserver(player);
+        String serverName = AuditLog.SERVER_NAME_VELOCITY;
         if(Subserver.isArena(subserver) && subserver.getServer() == player.getCurrentServer().orElseThrow().getServerInfo()) {
+            serverName = subserver.getServer().getName();
             localChat(Chatter.of(player), message);
         } else if (message.startsWith("+")) {
+            serverName = player.getCurrentServer()
+                    .map(ServerConnection::getServerInfo)
+                    .map(ServerInfo::getName)
+                    .orElse(serverName);
             localChat(Chatter.of(player), message.substring(1));
         } else {
             sendChat(Chatter.of(player), Chatter.globalChat(), "CHAT_GLOBAL", null, message);
         }
+        AuditLog.createChat(serverName, null, user, message);
     }
 
     private static boolean isMistypedCommand(Player player, String message) {
diff --git a/VelocityCore/src/de/steamwar/velocitycore/listeners/SessionManager.java b/VelocityCore/src/de/steamwar/velocitycore/listeners/SessionManager.java
index 7caeac14..248fd606 100644
--- a/VelocityCore/src/de/steamwar/velocitycore/listeners/SessionManager.java
+++ b/VelocityCore/src/de/steamwar/velocitycore/listeners/SessionManager.java
@@ -22,6 +22,7 @@ package de.steamwar.velocitycore.listeners;
 import com.velocitypowered.api.event.Subscribe;
 import com.velocitypowered.api.event.connection.DisconnectEvent;
 import com.velocitypowered.api.event.connection.PostLoginEvent;
+import de.steamwar.sql.AuditLog;
 import de.steamwar.velocitycore.VelocityCore;
 import de.steamwar.sql.Session;
 import de.steamwar.sql.SteamwarUser;
@@ -36,10 +37,12 @@ public class SessionManager extends BasicListener {
     @Subscribe
     public void onPostLogin(PostLoginEvent event){
         sessions.put(event.getPlayer(), Timestamp.from(Instant.now()));
+        AuditLog.createJoin(AuditLog.SERVER_NAME_VELOCITY, null, SteamwarUser.get(event.getPlayer().getUniqueId()));
     }
 
     @Subscribe
     public void onDisconnect(DisconnectEvent e){
+        AuditLog.createLeave(AuditLog.SERVER_NAME_VELOCITY, null, SteamwarUser.get(e.getPlayer().getUniqueId()));
         Timestamp timestamp = sessions.remove(e.getPlayer());
         if(timestamp != null) {
             VelocityCore.schedule(() -> Session.insertSession(SteamwarUser.get(e.getPlayer().getUniqueId()).getId(), timestamp)).schedule();