The principle of scarcity in social engineering attacks exploits the human inclination to value things that are perceived as limited or rare. Attackers employing this principle create a sense of urgency or scarcity around a desired resource, opportunity, or information to influence the target's behavior. By emphasizing limited availability, time-sensitive offers, or exclusive access, the attacker aims to drive the victim to act quickly and without proper consideration. This can lead the victim to disclose sensitive information, grant access to systems, or perform actions they would not have done under normal circumstances.