Description: Trust establishment in the field of cybersecurity refers to the process of creating credibility and reliability in a security context. This concept is fundamental to ensuring that systems, networks, and applications are secure and that users can interact with them without fear of compromising their information. Trust establishment involves implementing appropriate security measures, conducting audits and penetration tests, as well as effectively communicating security policies to all stakeholders. In the context of ethical hacking, professionals seek to identify and mitigate vulnerabilities to strengthen trust in systems. In vulnerability analysis, the weak points of a system are evaluated to ensure the integrity of information is maintained. In the confrontation between Red Team and Blue Team, trust establishment becomes a key objective, as the Red Team attempts to exploit weaknesses while the Blue Team works to defend and protect assets. In summary, trust establishment is an essential pillar in cybersecurity, as it allows organizations and users to feel secure in an increasingly complex and threatening digital environment.