is a tool commonly used to inject custom DLL files into running processes. In the context of Counter-Strike: Source , this is typically associated with unauthorized modifications (cheats, hacks, aimbots, wallhacks, etc.) that violate the game's Terms of Service and can lead to VAC (Valve Anti-Cheat) bans, account suspension, or permanent hardware bans.
Download and extract the injector from a trusted source, such as the master131 GitHub repository Extreme Injector v3.exe . For added safety, click and select Start in Secure Mode Target Selection: Extreme Injector v3.7.2 for CS- Source