There is of " Counter-Strike: Source 2.5
If you have already downloaded it, run a deep scan with Malwarebytes or Windows Defender . Better Alternatives
(2023) – The modern era built on the Source 2 engine.
: If you are using the "Counter-Strike Source Offensive" mod, you may need to add -game csso -insecure to the launch options in your launcher or 🎮 Features of the "2.5" / CSSO Mod