<![CDATA[Cybersecurity education in Indonesia still lacks structured Indonesian-language learning resources. At PT Linuxhackingid, learning is delivered through live classes but lacks written modules, a progress monitoring system, and an integrated practice laboratory, causing learning activities to be scattered across disconnected platforms. This created a gap between participants, who struggled to review material independently, and instructors, who had no integrated means of monitoring learning progress. This study aims to design and develop CyberLearn, a web-based cybersecurity learning platform integrating written materials, interactive quizzes, progress tracking, and a Capture The Flag (CTF) practice laboratory. The method used is Design and Development Research (DDR) with the ADDIE model, covering needs analysis, design and development, evaluation, and revision. Data were collected through observation and interviews with instructors, while system testing applied Black Box for functionality and the User Acceptance Test (UAT) for user acceptance. The UAT involving 13 respondents (8 instructors, 5 participants) obtained an average score of 4.31 out of 5 (86.2%), categorized as Very Good. The results revealed a difference in acceptance between roles, 4.82 among instructors and 3.49 among participants, indicating that quiz item variety and CTF laboratory difficulty require further refinement. Overall, CyberLearn is feasible as an integrated cybersecurity learning medium.]]>
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