EGNOS
The European Geostationary Navigation Overlay Service (EGNOS) is the first pan-European satellite navigation system. It is the Europe's regional satellite-based augmentation system (SBAS) deployed to provide safety of life navigation services to aviation, maritime and land-based users. EGNOS achieves its aim by transmitting a signal containing information on the reliability and accuracy of the positioning signals sent out by GPS.
EGNOS is a joint project of ESA, the European Commission and Eurocontrol, the European Organisation for the Safety of Air Navigation.
Encryption
It is a process of transforming information into either a code or a cypher that makes the data illegible to anyone without adequate credentials. Encryption plays a key role in ensuring the confidentiality and integrity of transmitted data.
EUCI
EU classified information (EUCI) means any information or material designated by an EU security classification, the unauthorised disclosure of which could cause varying degrees of prejudice to the interests of the Union or of one or more of the Member States. EUCI is classified at one of the following levels:
- TRÈS SECRET UE/EU TOP SECRET: information and material the unauthorised disclosure of which could cause exceptionally grave prejudice to the essential interests of the European Union or of one or more of the Member States,
- SECRET UE/EU SECRET: information and material the unauthorised disclosure of which could seriously harm the essential interests of the European Union or of one or more of the Member States,
- CONFIDENTIEL UE/EU CONFIDENTIAL: information and material the unauthorised disclosure of which could harm the essential interests of the European Union or of one or more of the Member States, or
- RESTREINT UE/EU RESTRICTED: information and material the unauthorised disclosure of which could be disadvantageous to the interests of the European Union or of one or more of the Member States.
Refer to Decision 2013/488/EU for more details.