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| 1 | +# Anti-Cheat: Unauthorized Script Detection for Roblox Games |
| 2 | + |
| 3 | +## Introduction |
| 4 | + |
| 5 | +In this document, we'll cover how to implement a system that detects unauthorized scripts in Roblox games. If a player tries to insert scripts that are not in the `ServerScriptService`, the game will automatically ban and disconnect them. |
| 6 | + |
| 7 | +## Key Practices |
| 8 | + |
| 9 | +- **Server-Side Script Validation**: Always ensure that scripts inserted by players are monitored and validated. |
| 10 | +- **Game Integrity**: Prevent players from injecting or modifying scripts in unauthorized locations. |
| 11 | + |
| 12 | +## Example Code: Unauthorized Script Detection |
| 13 | + |
| 14 | +The following Lua code checks if a player has implemented any scripts outside of `ServerScriptService` and bans them if detected. |
| 15 | + |
| 16 | +```lua |
| 17 | +-- Function to check if a player has unauthorized scripts |
| 18 | +local function checkForUnauthorizedScripts(player) |
| 19 | + -- Get the player's scripts folder (if they have one) |
| 20 | + local playerScripts = player:FindFirstChild("PlayerScripts") |
| 21 | + if not playerScripts then return end |
| 22 | + |
| 23 | + -- Loop through each script in PlayerScripts |
| 24 | + for _, script in pairs(playerScripts:GetChildren()) do |
| 25 | + -- Check if the script is located outside of ServerScriptService (i.e. unauthorized) |
| 26 | + if script:IsA("Script") or script:IsA("LocalScript") then |
| 27 | + local scriptParent = script.Parent |
| 28 | + if scriptParent.Name ~= "ServerScriptService" then |
| 29 | + -- If unauthorized script is found, ban the player and disconnect |
| 30 | + game:GetService("BanService"):BanPlayer(player, "Implemented unauthorized scripts.") |
| 31 | + player:Kick("You have been permanently banned for attempting to modify the game with unauthorized scripts.") |
| 32 | + break |
| 33 | + end |
| 34 | + end |
| 35 | + end |
| 36 | +end |
| 37 | + |
| 38 | +-- Monitor for new players joining the game |
| 39 | +game.Players.PlayerAdded:Connect(function(player) |
| 40 | + -- Call the function to check the player's scripts |
| 41 | + checkForUnauthorizedScripts(player) |
| 42 | +end) |
| 43 | + |
| 44 | +-- Optional: Check periodically for any new scripts added while the game is running |
| 45 | +game:GetService("RunService").Heartbeat:Connect(function() |
| 46 | + for _, player in pairs(game.Players:GetPlayers()) do |
| 47 | + checkForUnauthorizedScripts(player) |
| 48 | + end |
| 49 | +end) |
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