Elizabeth, a security administrator, is concerned about the potential for data exfiltration using external storage drives. Which of the following would be the BEST way to prevent this method of data exfiltration?
1) Create an operating system security policy to prevent the use of removable media
2) Monitor removable media usage in host-based firewall logs
3) Only allow applications that do not use removable media
4) Define a removable media block rule in the UTM