Per Chapter 16 Problem 9 Security and Control Assessment discuss the internal control weaknesses and your recommendations to strengthen them as they relate to computer security, systems development and program change.

6. PREVENTIVE CONTROLS Listed here are five scenarios.

a. An intruder taps into a telecommunications device and retrieves the identifying codes and personal identification numbers for ATM card- holders. (The user subsequently codes this information onto a magnetic coding device and places this strip on a piece of cardboard.)

b. Because of occasional noise on a transmission line, electronic messages received are extremely garbled.

c. Because of occasional noise on a transmission line, data being transferred are lost or garbled.

d. An intruder is temporarily delaying important strategic messages over the telecommunications lines.

e. An intruder is altering electronic messages before the user receives them.