Answer:
An operating system is an interface built toward a consumer made of code. The security threats it faces are worms, viruses, and bugs (digital) On my operating system, macOS X, I added the Avast Secure Antivirus, and added a program called lockdown initiator to it (works with windows). To verify, see if your antivirus captures any viruses, or have a pro add a virus to your computer and test if it gets in or not(the same way a doctor gives you vaccines).
