Description: The ‘Guard Duty’ refers to the responsibility of monitoring and protecting a system against threats, ensuring that vulnerabilities are effectively identified and mitigated. In the context of cybersecurity, this concept is fundamental for defense teams, known as Blue Teams, which are responsible for implementing security measures, conducting audits, and responding to incidents. The Guard Duty involves constant vigilance, where professionals must be alert to any suspicious activity or anomalies in the network. This includes the use of intrusion detection tools, log analysis, and the application of security patches. Furthermore, the Guard Duty is not limited to system protection but also encompasses user education and awareness about safe practices. The effectiveness of this duty is measured through simulations and incident response exercises, where the team’s ability to react to an attack is evaluated. In summary, the Guard Duty is an essential component of cybersecurity strategy, ensuring that organizations are prepared to face and mitigate threats in an increasingly complex digital environment.