Civil aviation, similar to other economy sectors, is exposed to cyber-attacks. In this case however, the protection against cybersecurity threats is gaining particular significance, as the industry relies heavily on the use of information systems (information and communication systems with electronic data processed in such systems). The systems are exposed to incidents. Incidents in civil aviation are events occurring in cyberspace which affect, or might potentially affect, the security of aircraft. The issue of cybersecurity in civil aviation is discussed in the context of legal regulations that are in force in Poland and Slovakia. Individual solutions aimed at ensuring the cybersecurity of air transport were analysed.