Acme Films produces advertisements for cable television stations- They have two locations in a large metropolitan area r’ Building 1 contains the administrative, sales, marketing, human resources, development, and graphics departments Building 2 contains the sound stages, production and post-production facilities, equipment, and mobile unit storage. The two buildings, Five miles apart are connected by a VPN using a T1 connection. Each location is protected by hardware firewalls and each location has a DMZ. Building Vs DMZ includes Web. FTP. DNS and e-mail servers. Building 2’s DMZ includes an FTP sewer from which clients can access work product. Network-based lOS systems are placed in the DMZs There are 75 Windows XP workstations in each location. Workstation security is centrally managed and includes anti-virus, anti-spyware and patch management File. Application, database, and print sewers at each location are protected by anti-virus, anti-spyware and patch management. Internet access is provided to users via a proxy sewer and NAT. User authentication is controlled by Windows 2008 Active Directory and users must authenticate by using a smart card and entering a PIN. Discretionary access control methods are in use. List and assess three security threats faced by the information technology systems and list and describe 1 security control needed that would be appropriate to address each threat.