PUA:Win32/Vigua.A is a generic detection for unwanted software often disguised as a system optimizer. You can read more about it in the blog https://gridinsoft.com/blogs/pua-win32-vigua-a-detection/ These programs typically use scare tactics, showing fake system issues to push users into buying the full version. They may also claim to improve system performance with unnecessary or harmful features. Despite their convincing design, these applications provide little to no benefit and can harm your system or lead to crashes. Using tools like GridinSoft Anti-Malware can safely remove such threats.