LIST OF ABBREVIATIONS ACS – Act on Cyber Security AFCEA – Armed Forces Communications & Electronics Association CERT – Computer Emergency Response Team CFC – Cyber Forces Command CI – Critical infrastructure CII – Critical information infrastructure CyCLONe – Cyber Crisis Liaison Organisation Network DCS – Decree on Cyber Security DoS/DDoS – Denial of Service/Distributed Denial of Service DPRK – Democratic People’s Republic of Korea EU – European Union IIS – Important information system ITU – International Telecommunication Union ISVS – Public Administration Information System MFA – Ministry of Foreign Affairs NAKIT – National Agency for Communication and Information Technologies NATO – North Atlantic Treaty Organisation NCOC – National Cyber Operations Centre NCSC – National Cyber Security Centre NIS – Network and Information Security NÚKIB – National Cyber and Information Security Agency OECD – Organisation for Economic Co-operation and Development OES – Operator of an essential service OSCE – Organisation for Security and Co-operation in Europe PRC – People’s Republic of China SIEM – Security Information and Event Management TACR – Technology Agency of the Czech Republic UN – United Nations List of Abbreviations 6