2.
2013/488/EU: Council Decision of 23 September 2013 on the security rules for protecting EU classified information · European Union
EUCI shall not be downgraded or declassified nor shall any of the markings referred to in Article 2(3) be modified or removed without the prior written consent of the originator.
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Source: EUR-Lex (Cellar) · retrieved 2026-11-01 · Text as adopted (Official Journal); later amendments are not incorporated in this text.