... hack, 30– 32 Whurleycold readings, 22 2 22 3direction of approach, 22 3 22 4fooling the guards, 22 3 22 4impersonating an employee, 22 6 22 9Las Vegas security audits, 22 2 23 2phony badges, 22 9 23 0psychology ... 23 4attribution, 23 6Chinese university hack, 25 27 cold readings, 22 2 22 3, 23 6countermeasures, 110, 23 8credibility, 23 3desire to help, 23 5 23 6direction of approach, 22 3 22 4distracting the ... 130–131, 137, 22 9 23 0politeness norm, 136psychology of color, 22 5 22 6reactance, 23 7 23 8schmoozing casino staffers, 22 2 22 3shoulder surfing, 126 – 127 social psychology of persuasion, 23 2stealing...