Imagine you are in charge of designing physical security controls for your employer, which operates out of a multitenant office building. Discuss the top-three physical security controls that you believe need to be implemented in order to secure the physical perimeter of the office space. Justify the importance of each.

Explain the physical security controls that you would consider implementing in a multi-tenant office space that you otherwise would not in a stand-alone, dedicated office space. Justify your response.