Listed here are five scenarios. For each scenario, discuss the possible damages that can occur. Suggest a preventive control.

a. An intruder taps into a telecommunications device and retrieves the identifying codes and personal identification numbers for ATM cardholders. (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 is lost or garbled.