You can use the Chrome plugin WOT to check web site security. Always virus check any file you down load.
The point that @simrick and others (including myself) have tried to make is that the program is designed primarily for use by those wishing to overclock their systems.
Overclocking, as pointed out already, can completely ruin a system if not done properly.
So, the fundamental question is: WHY do you want to use Prime95?
If it is to overclock your system then, as @simrick has suggested, it might be advisable to seek guidance from experts in the special forum area dedicated to that undertaking:
PC Custom Builds and Overclocking - Windows 10 Forums
That is all.
That is the correct site.