  Nowadays, most companies need to collect, store, and manage personal
information in order to deliver their services. Accordingly, privacy has
emerged as a key concern for these companies since they need to comply with
privacy laws and regulations. To deal with them properly, such privacy concerns
should be considered since the early phases of system design. Ontologies have
proven to be a key factor for elaborating high-quality requirements models.
However, most existing work deals with privacy as a special case of security
requirements, thereby missing essential traits of this family of requirements.
In this paper, we introduce COPri, a Core Ontology for Privacy requirements
engineering that adopts and extends our previous work on privacy requirements
engineering ontology that has been mined through a systematic literature
review. Additionally, we implement, validate and then evaluate our ontology.
