art_20__para_5
5. Legal entities participating in an action shall ensure the protection against unauthorised disclosure of classified information used or generated by the action. They shall provide proof of personal security clearance or facility security clearance from the relevant national security authorities, prior to the start of the activities concerned.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-31 · Text as adopted (Official Journal); later amendments are not incorporated in this text.