A three-item likert scale designed to measure the degree to which a person would refrain from providing personal information at a particular website or not use it at all.
Lwin, May, Jochen Wirtz, and Jerome D. Williams (2007), “Consumer Online Privacy Concerns and Responses: A Power-Responsibility Equilibrium Perspective,” Journal of the Academy of Marketing Research, 35 (4), 572-585.
Free access to 2023+ psychometric scales at PsychScales