This article focuses on the importance of information sharing practices for capacity building competences in the field of cybersecurity.It analyses needs and constraints of information sharing to produce security and cyberresilience that promote trust and confidence in cyberspace. It identifies the different types of information that can be shared as well as the main vectors for supporting information sharing. By proposing five applications of information sharing in cybersecurity, it focusses on education and warning in order to enforce people competencies.High-level recommendations are proposed in conclusion for the establishment of a platform for information sharing and analysis.