1. Vulnerability is a weakness that can potentially harm us. For example, vulnerability might be a lack of backup generators in a facility or maybe an application you are running on the computer. A threat is something that has the potential to cause us harm. For example, a new virus that threatens to attack windows.

2. Logical controls can be considered as passwords, encryption, logical access controls, firewalls, intrusion detection systems, and network security. Basically, logic controls are things that protect the systems, networks, and environments that process, transmit, and store our data.

3. Utility describes how useful the data is to us. For example, encrypted tapes would have very little utility because the data would not be readable.

4. An interception is an attack against confidentiality. Interception allows for users to access our data, applications, and environments making them attacks against confidentiality. For example, an interception might be the viewing of an unauthorized file or eavesdropping on certain phone conversations.

5. We can never really say that our environment is completely secure and it is very difficult to determine when we are truly secure. Although we cannot be completely secure we can point out areas in our environment that cause our environment to be insecure and attack those issues to be as close as secure as we possibly can.

6. I would say that protecting data on a USB flash drive would start with the Host layer and end with the Data layer. Within the Host layer you need authentication of who is able to access the USB flash drive. Then in the application layer you need data validation or content filtering to know who is allowed to view the data. And finally, in the Data layer you need data encryption in place and testing to make sure the encryption is working properly. But, even after all of this,