You can find all of the referential Italian regulations on the ENAC website in its dedicated page:

https://www.enac.gov.it/sicurezza-aerea/droni/normativa-droni

For the latest updates on the subject:

https://www.enac.gov.it/la-normativa/normativa-enac/linee-guida/lg-2020001-nav

https://www.enac.gov.it/la-normativa/normativa-enac/regolamenti/regolamenti-ad-hoc/regolamento-uas-it

Ethical code and Mod.231
https://www.enav.it/governance/etica-e-compliance/codice-etico-e-modello-organizzativo

Whistleblowing
https://www.enav.it/sites/public/it/Governance/whistleblowing.html