Cyber Incident Classification List of Acronyms and Abbreviations CBM Confidence-Building Measure CERT Computer Emergency Response Team CIT Cybersecurity Incident Taxonomy CSIRT Computer Security Incident Response Team ENISA European Union Agency for Cybersecurity EU European Union FIRST Forum of Incident Response and Security Teams ICT Information and Communications Technology NCICS National Cyber Incident Classification System NIS Net work and Information Systems NIST National Institute of Standards and Technology OSCE Organization for Security and Co-operation in Europe UN United Nations US The United States of America 5