HDC Networks Ltd

HDC Networks Ltd. is a leading security services company. Matthew works as a penetrating tester with this firm. He was asked to gather information about the target company. Matthew begins with social engineering by following the steps:

A) Secretly observes the target to gain critical information II. Looks at employee's password or PIN code with the help of binoculars or a low-power telescope Based on the above description, identify the information gathering technique.
B) Phishing
C) Shoulder surfing
D) Tailgating
E) Dumpster diving