Which of the following are examples of passive attacks? Each correct answer represents a
complete solution. Choose all that apply.
A.
Dumpster diving
B.
Placing a backdoor
C.
Eavesdropping
D.
Shoulder surfing
Explanation:
In eavesdropping, dumpster diving, and shoulder surfing, the attacker violates the
confidentiality of a system without affecting its state. Hence, they are considered passive attacks.