Regardless of your role with respect to cyber-space, when you engage in any discussion of cyber-security, make sure everyone in the dialogue is working with the same definition. Doing so will help avoid confusion, conflict, and missed expectations.
If you browse the Web for the definition of cyber-security, you will get a wide variety of definitions. Some definitions encompass the spectrum of IT and data security. All exclude the broader field of "information security" which would include information in non-electronic form. Some definitions limit the scope to cyber-space...the realm of connected computers, their transactional activities and data exchanges. Futher, some limit scope to malicious attacks. Others expand scope to include all threats to networks, systems, applications, and data.
There is no need to argue the definition...only to agree on the operative definition for the purposes of the discussion at hand. Define your terms and scope to achieve success.