La Corte di Giustizia si pronuncia in materia di obblighi di trasmissione dei dati sul traffico e di lotta alla criminalità nonché di salvaguardia della sicurezza nazionale (CGUE, Grande Sezione, sentenza 6 ottobre 2020, C-511/18, C-512/18, C-520/18, C-623/17)

Article 1(3), Article 3 and Article 15(1) of Directive 2002/58/EC of the European Parliament and of the Council of 12 July 2002 concerning the processing of personal data and the protection of privacy in the electronic communications sector (Directive on privacy and electronic communications), as amended by Directive 2009/136/EC of the European Parliament and of the Council of 25 November 2009, read in the light of Article 4(2) TEU, must be interpreted as meaning that national legislation
enabling a State authority to require providers of electronic communications services to forward traffic data and location data to the security and intelligence agencies for the purpose of safeguarding national security falls within the scope of that directive. Article 15(1) of Directive
2002/58, as amended by Directive 2009/136, read in the light of Article 4(2) TEU and Articles 7, 8 and 11 and Article 52(1) of the Charter of Fundamental Rights of the European Union, must be interpreted as precluding national legislation enabling a State authority to require providers of electronic communications services to carry out the general and indiscriminate transmission of traffic data and location data to the security and intelligence agencies for the purpose of safeguarding national security.