insider

US /ɪnˈsaɪ.dɚ/
UK /ɪnˈsaɪ.dɚ/
"insider" picture
1.

insider, addetto ai lavori

a person within a group or organization, especially someone who has special knowledge or access to information not available to outsiders

:
As an insider, she knew all the secrets of the company.
Come insider, conosceva tutti i segreti dell'azienda.
The police suspect an insider helped the thieves.
La polizia sospetta che un insider abbia aiutato i ladri.