This study examines the role of Basic Cultural Sciences (IBD) as a foundational pillar of Indonesia’s legal culture in the era of digital disruption. This research uses normative legal research methods with statutori, conceptual and analytical approaches, this paper analyzes the relationship between cultural values, legal humanities, and digital law enforcement. The study integrates Friedman’s legal culture theory, Widagdho’s humanistic axiology, and Asshiddiqie’s digital transformation framework. Findings reveal that legal effectiveness cannot rely solely on formal regulation but requires the integration of IBD as a moral and “spiritual infrastructure” to mitigate behavioral distortions in cyberspace. The study concludes that strengthening legal culture through IBD is essential to create a harmonious, ethical, and substantively just digital ecosystem in Indonesia
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