Our industry (biotech) relies heavily on Windows and specifically Windows backwards compat. Heck just this last month we put in some used analytical equipment t

Our industry (biotech) relies heavily on Windows and specifically Windows backwards compat. Heck just this last month we put in some used analytical equipment that came with software that was first released on XP. It runs like a champ on W10-32bit. The software we use is often crazy expensive - when you add in the compliance addons, it routinely exceeds USD 10K. I can tell you unequivocally that Windows' backwards compat has saved our company tens of thousands of dollars. Software isn't magic, security isn't magic either. You can employ physical protections (air-gap) and hardware/software (firewall, etc) protections to contain the threat. All software has the potential to be vulnerable, and so a sysadmin would be wise to treat them equally - new or old.