This study aims to examine how social engineers use persuasion principles during vishing attacks.
In total, 86 examples of real-world vishing attacks were found in articles and videos. Each example was coded to determine which persuasion principles were present in that attack and how they were implemented, i.e. what specific elements of the attack contributed to the presence of each persuasion principle.
Authority (A), social proof (S) and distraction (D) were the most widely used persuasion principles in vishing attacks, followed by liking, similarity and deception (L). These four persuasion principles occurred in a majority of vishing attacks, while commitment, reciprocation and consistency (C) did not. Further, certain sets of persuasion principles (i.e. authority, distraction, liking, similarity, and deception and social proof; , authority, commitment, reciprocation, and consistency, distraction, liking, similarity and deception, and social proof; and authority, distraction and social proof) were used more than others. It was noteworthy that despite their similarities, those sets of persuasion principles were implemented in different ways, and certain specific ways of implementing certain persuasion principles (e.g. vishers claiming to have authority over the victim) were quite rare.
To the best of authors’ knowledge, this study is the first to investigate how social engineers use persuasion principles during vishing attacks. As such, it provides important insight into how social engineers implement vishing attacks and lays a critical foundation for future research investigating the psychological aspects of vishing attacks. The present results have important implications for vishing countermeasures and education.
