Which of the following would be an element of a SETA program used to prevent industrial espionage in an organization?

Question $7$ options:

a$)$

Ensuring that only authorized personnel are allowed in a server room

b$)$

Encrypting all hard drives

c$)$

Creating a company intranet site where weekly security bulletins are posted

d$)$

Ensuring that all outdated printed data is shredded