1. Consider an automated teller machine (ATM) in which users provide a personal identification number (PIN) and a card for account access. Give examples of confidentiality, integrity, and availability requirements associated with the system and, in each case, indicate the degree of importance of the requirement.

2. Consider a desktop publishing system used to produce documents for various organizations.

a. Give an example of a type of publication for which confidentiality of the stored data is the most important requirement.

b. Give an example of a type of publication in which data integrity is the most important requirement.

c. Give an example in which system availability is the most important requirement.

3. For each of the following assets, assign a low, moderate, or high impact level for the loss of confidentiality, availability, and integrity, respectively. Justify your answers.

a. An organization managing public information on its Web server.

b. A law enforcement organization managing extremely sensitive investigative information.

c. A financial organization managing routine administrative information (not privacy-related information).

d. An information system used for large acquisitions in a contracting organization contains both sensitive, pre-solicitation phase contract information and routine administrative information. Assess the impact for the two data sets separately and the information system as a whole.

e. A power plant contains a SCADA (supervisory control and data acquisition) system controlling the distribution of electric power for a large military installation. The SCADA system contains both real-time sensor data and routine administrative information. Assess the impact for the two data sets separately and the information system as a whole.

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