EIREducational Innovation Research3029-18443029-1852WHIOCE PUBLISHING PTE. LTD.10.18063/EIR.v3i11.1710ArticleResearch on Personal Data Security in the Context of Big Datahttps://artdesignp.com/journal/EIR/3/11/10.18063/EIR.v3i11.1710WangGenyuan20253112025-12-20The deep integration of big data technology has accelerated the digital transformation of social production and daily life. As a core production factor in the digital economy, personal data’s strategic value has become increasingly prominent, yet the accompanying security risks pose severe challenges to individual rights, social order, and even national security. Based on the circulation patterns of personal data and security governance practices in the big data environment, this paper systematically analyzes the core characteristics of personal data and potential security risks throughout its lifecycle. By examining authoritative data and typical cases from 2024 to 2025, it identifies prominent issues in current data security protection across technological, institutional, and governance dimensions. The study proposes a comprehensive protection framework encompassing technological innovation, institutional improvement, multi-stakeholder governance, special group protection, and localization of international experience. This framework provides practical pathways and theoretical references for achieving a balance between personal data security and data value development.Big data, Personal data security, Privacy protection

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