Yes. Roblox actively detects modified clients and script usage. Even a first offense can lead to a permanent ban.
loadstring(game:HttpGet("https://raw.githubusercontent.com/.../Script.lua"))()
Using unauthorized scripts is a violation of the Roblox Terms of Service. This can lead to permanent account bans and the loss of all digital items and progress associated with an account.
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Executing unverified code or using "injectors" can bypass standard security protocols on a computer, potentially installing viruses, keyloggers, or ransomware. Fair Play and Community Impact
If you want to improve your gameplay without the risk of a ban, check out these official community resources: