In the era of increasing cyber threats, information security has become a crucial element of every IT project. This lecture will discuss the principles of secure software delivery and deployment — from planning and design through implementation and testing to maintenance and audit. Participants will learn practical methods for integrating security throughout the software lifecycle (Secure SDLC, DevSecOps) as well as requirements arising from KRI, UoKSC, ISO 27001, and NIS2 regulations. The lecture is intended for public administration representatives, IT contractors, project managers, and individuals responsible for the security of information systems.