Classified information

EU classified information as defined in Council Decision of 23 September 2013 on the security rules for protecting EU classified information (2013/488/EU) or classified by one of the Member States and marked as per Appendix B of that Council decision.
EU classified information means any information designated by a EU security classification, of which the unauthorised disclosure could cause varying degrees of prejudice to the interests of the European Union or of one or more of the Member States. Classified information may be classified according to four levels: top secret, secret, confidential, restricted (based on the definition from the Council Decision).