Help with anti cheat: doesn't detect my walkspeed that changes

Help and Feedback Scripting Support
#1

I’m making a anticheat for a game I’m a developer on and whenever I change my walkspeed it’s just won’t send the webhook or kick me (the webhook works I tested it)

local DSS = game:GetService("DataStoreService")
local HttpService = game:GetService("HttpService")

function sendWebhook(action,reason,plr)
	local data = {
		["embeds"] = {{
			["title"] = "Potential Exploiter Found",
			["color"] = "16726022",
			["description"] = "```Exploiter Found```\nA exploiter has been found: our moderation team will review this log and determine if this is a true/false positive.\n\n**Username:** "..plr.Name.."\n**User ID:** "..plr.UserId.."\n**Reason:** "..reason.."\n**Action:** "..action,
			["thumbnail"] = {url="http://www.roblox.com/Thumbs/Avatar.ashx?x=100&y=100&Format=Png&userId="..plr.UserId},


		}
		}}

	local finaldata = HttpService:JSONEncode(data)
	HttpService:PostAsync("no webhook for u", finaldata)
end

game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(char)
		-- Character Related Exploits
		local hum = char:FindFirstChildOfClass("Humanoid")
		local CheckClientWalkspeed = game:GetService("ReplicatedStorage"):FindFirstChild("Remotes2").CheckClientWalkspeed:FireClient(hum,"WalkSpeed")
		-- WS Exploit
		while wait(0.1) do
		if CheckClientWalkspeed ~= 16 then
			if CheckClientWalkspeed == 14 or CheckClientWalkspeed == 18 then return end
			plr:Kick("AntiExploit | Speed Hacks (Increased/Decreased WalkSpeed)")
				sendWebhook("[KICK+LOG]","Speed Hacks", plr)
			end	
		end
	end)
end)
#2

i assume this code is on the server…
if you change the walkspeed with client mode or with actual cheats the server doesnt know… only the client knows

( so the best thing to do is get the position of the character every time you can and make sure it isnt too fast )

1 Like
#3

I’m using a event if you read the code to get the player’s walkspeed via the client, the client’s code is this:

game.ReplicatedStorage.Remotes2.CheckClientWalkspeed.OnClientEvent:Connect(function(hum,propertytocheck)
	return hum[propertytocheck]
end)
#4

okay thats good, but you know players with cheats can just delete the script

1 Like
#5

No, it’s parented to nil at the start of it and another local script hidden very well is checking every 0.1 seconds if it’s disabled or destroyed

#6

nil is basically deleted it doesnt run code. also whats checking the checker

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#7

if you parent it to nil it’s still here, just not under “game” so its harder to find

#8

You only call the RemoteFunction once, meaning you only get the value once so even if they changed your code will still show as the old value

#9

this is untrue, code that is simply parented to nil but not destroyed still runs.

1 Like
#10

the issue here is you’re not invoking the client

fixed server code (I cut out the webhook because I don’t have the full code, add it back)

local CheckClientWalkspeed = game:GetService("ReplicatedStorage").CheckClientWalkspeed

local function GetWalkSpeed(plr, hum)
	return CheckClientWalkspeed:InvokeClient(plr, hum, "WalkSpeed")
end


game.Players.PlayerAdded:Connect(function(plr)
	plr.CharacterAdded:Connect(function(char)
		-- Character Related Exploits
		local hum = char:WaitForChild("Humanoid", 9e9)
		
		-- WS Exploit
		while wait(0.1) do
			local CheckClientWalkspeed = GetWalkSpeed(plr, hum)
			
			print(CheckClientWalkspeed)
			if CheckClientWalkspeed ~= 16 then
				if CheckClientWalkspeed == 14 or CheckClientWalkspeed == 18 then return end
				plr:Kick("AntiExploit | Speed Hacks (Increased/Decreased WalkSpeed)")
			end	
		end
	end)
end)

fixed client code

game:GetService("ReplicatedStorage"):WaitForChild("CheckClientWalkspeed").OnClientInvoke = function(Hum, Property)
	return Hum[Property]
end

You have to replace the remoteevent with a remotefunction as well

This method for detecting walkspeed is also extremely flawed, you should use a magnitude check on the server so you aren’t relying on the client to not lie.

2 Likes