Security has worried authorities and civil society in recent years. Different substrata of society have different perceptions about security. This document explores the reliability and validity of an instrument that measures the perception of security in undergraduate students by reviewing seven dimensions: territorial, national, public (government), human, public (self-protection), private and internet. Consequently, fit and residual valuesallowed us to accept the null hypothesis of a significant relationship between the theoretical dimensions with respect to the weighted factors.