The rapidly advancing digitalization trend, along with e-government, industry 4.0, and society 5.0, has increased both the benefits and risks in the cyber field. Cybersecurity is crucial for protecting various entities and requires a customized, up-to-date approach for each professional group. Key concepts in cybersecurity include networking, security engineering, and governance. Building a solid cybersecurity culture involves administrative support, clear rules and procedures, training, testing, and communication. The book is divided into four chapters, focusing on the protection of information assets, governance and management of IT, information systems acquisition, development, and implementation, and information systems operations and business resilience. By prioritizing cybersecurity and fostering a strong security culture, organizations can reduce risks and encourage growth.