The economic security of the state is not only the most important component of the national security system, but also the main component of the mechanism for the development of the country’s economy. The issue of determining the economic security of the Eurasian Economic Union (EAEU) in the context of digital transformation is extremely relevant today. The article considers the essence of the economic security of the EAEU, substantiates the relevance and signifcance of the context of the ongoing digital transformation, its impact on the sustainability and development of the economy of the integration association. The object of the study is economic security in the era of universal digitalisation, the subject of the study is ensuring the economic security of the EAEU in the era of digital transformation. In the context of the problem posed, the threat is the disunity of regulation of digital transformation, the lack of a clear regulatory framework, as well as a critical gap in the development and implementation of technologies in the territories of the EAEU member states. Based on the analysis of the EAEU Digital Agenda until 2025, the authors identifed the main drivers for the growth of the economic security of the Union in the context of digitalization. The researchers assessed the current threats to the EAEU economy related to the introduction of digital technologies. The article gives recommendations on updating approaches and tools to ensure economic security in the context of digital transformation. A prerequisite should be the systematic and organized efforts of all EAEU member countries. The conducted research is based on the application of a system of general scientifc and particular scientifc methods: systematization, analysis, formalization, logical method, synthesis, etc.