Jameson, a professional hacker, impersonates an external auditor and tries to persuade a conversation with one of the ploy ease of his tiger organisation. He encourages the employee to ask questions and a new played certain questions to dry out there quite information. Which of the following attack techniques was betrayed by Jamison and above scenario.

$*$ eavesdropping

$*$ shoulder surfing

$*$ piggybacking

$*$ reverse social engineering