The study examines engineering students' opinions on the effects of mandatory SIM card registration on data privacy and cybersecurity at a Higher Education Institute in the Philippines. This paper examines data privacy and cybersecurity concerns created by mandatory registration in the Philippines after outlining the present state of things and the regulation requirements. This paper used survey questionnaires and interviews to study engineering students' perceptions by investigating complex interrelationships and assessing observed and latent variables, Structural Equation Modeling was used to explain the occurrences. Findings show a substantial association between mandatory SIM card registration, data privacy, and cybersecurity. Results illustrate how crucial it is to monitor the negative consequences of this registration requirement on engineering students' digital security at universities, as there are numerous interrelated ways it might endanger their safety.