Information systems and information security systems within maritime affairs are a part of a critical infrastructure when it comes to the possibility of attacks or threats. In order to develop awareness of the maritime sector being a target of adverse events, it is necessary to educate the existing staff and those that are yet to become a part of it. Current situation regarding awareness, education and actions in certain situations is far from an enviable level, i.e. from the level in other Member States of the European Union. This conclusion is based on the relevant data collected for the purpose of writing this thesis by interviewing various business sectors within the maritime affairs sector. All data were collected anonymously from a sample comprising 20 respondents, and refer to the sector of agencies for placement of seamen, charter agencies, smaller and bigger shipyards, manufacturing, ship and ship equipment repairing , the service sector (port authority). Based on the conducted research, it can be concluded that the safety and security of information systems within the maritime affairs sector still greatly deviate from the European and global average, as well as that changes need to be introduced as soon as possible.