This post does not pertain to horseracing per se, but we're all using computers to run RDSS and must be ever vigilant about computer viruses. I've just had to rebuild my Windows 10 computer because a virus wiped out the Master Boot Record. During the ordeal of reinstalling Windows and all the software and restoring the documents and data, I found this great website called VirusTotal.
https://www.virustotal.com/#/home/upload
Assume you've downloaded an .exe file from an unfamiliar website and you're uneasy about clicking that install button. Just call up VirusTotal, give it the location of the file and it will run dozens of virus checks. I could have saved myself about 8 hours of misery if I had used it.