Less common but present on disreputable modding forums – a fake Script Hook V can encrypt your game files and demand payment.
The only safe and recommended source is the developer's official site. script hook v 103501 download patched
Sites like GTA5-Mods.com and Uptodown host both the latest and older versions if you need to downgrade. Installation Steps for the "Patched" Version Less common but present on disreputable modding forums