What I need to do to prevent/Stop YAC (Malware) installation in my PC without my authorization?

I’m actually have Norton Anti-Virus (18.7.1.3) installed in my machine and he let me know with a warning message that I have an attack from a malware application. Couple seconds later I check my computer and the YAC program was installed in my computer again.

How Norton Anti-Virus can stop or prevent that YAC (Malware) installed automatically in my machine?

What I need to do to prevent/Stop YAC (Malware) installation in my PC without my authorization?

Can someone help me with this problem?

I’m actually have Norton Anti-Virus (18.7.1.3) installed in my machine and he let me know with a warning message that I have an attack from a malware application. Couple seconds later I check my computer and the YAC program was installed in my computer again.

How Norton Anti-Virus can stop or prevent that YAC (Malware) installed automatically in my machine?

What I need to do to prevent/Stop YAC (Malware) installation in my PC without my authorization?

Can someone help me with this problem?