77The Court stated, in that regard, that, while the objective evidence may vary according to the nature of the measures taken for the purposes of prevention, investigation, detection and prosecution of serious crime, the persons thus targeted may, in particular, be persons who have been identified beforehand, in the course of the applicable national procedures and on the basis of objective and non-discriminatory factors, as posing a threat to public or national security in the Member State concerned (see, to that effect, judgments of 21 December 2016, Tele2 Sverige and Watson and Others, C‑203/15 and C‑698/15, EU:C:2016:970, paragraph 110, and of 6 October 2020, La Quadrature du Net and Others, C‑511/18, C‑512/18 and C‑520/18, EU:C:2020:791, paragraph 149).
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