The growing concern for information security arises from the risks associated with the dissemination of personal data on the internet and the increasing incidents of social engineering attacks, which exploit psychological vulnerabilities. These attacks pose a substantial threat to individuals and organizations, potentially resulting in significant financial losses. This article highlights the development of the APSEA tool - Awareness and Prevention Expert System against Engineering Attacks, an expert system designed to raise awareness and prevent social engineering attacks in public organizations. The tool aims to make employees vigilant against such threats, empowering them to identify and avoid psychological manipulation techniques used by attackers. Despite existing protective measures such as awareness training and security policies, APSEA seeks to contribute to strengthening the human factor in information security. The article covers key concepts in information security, presenting interactive modules and artificial intelligence features to identify vulnerabilities. A qualitative and performance evaluation of the tool is conducted, and the results indicate that the adopted approach is effective in achieving its objectives.