Cheat Engine (CE) itself is clean open-source software (hosted on GitHub, signed builds). It is not spyware, a virus, or a rootkit. However, how you obtain and use it determines risk.
.CT files can embed Lua scripts that download/execute payloads. Only load tables from trusted authors (FearLess Cheat Engine forums, official CE repo)..CT files from YouTube/Unknown forums.Verdict: Safe tool if sourced correctly and used responsibly. Dangerous if used blindly on protected online games or with untrusted scripts.