Hello, Platinum is safe to install and run. If you are wondering about installing and using our software, but you are worried about the Publisher : Unknown or no security certificate? There is a yearly cost to have this certification and that cost would have to be passed on to you as a purchaser and we do not think that is fair. We believe that if one of our files was affected by a virus our anti-virus or your anti-virus would pick that up immediately. This is the main reason for certification and we believe our files are clean of viri. Thanks for understanding, Craig - Platinum Technical