Andrade, J. C. V. (2019) Os Direitos Fundamentais na Constituição Portuguesa de 1976. 6th Ed. Almedina, Coimbra

However, the delegation of security functions or administrative police powers to private entities must be wary of the noxiousness of “profits mirage”. Like any business, the security market is intended to make profit. If you bestow the promotion of public security to private entities, they will not manage it but they will take it over and use it.