In today's digital age, the importance of information security cannot be overstated. With the increasing reliance on digital platforms for business operations, the need for robust information security management systems has become more critical than ever. This is particularly true for companies operating in overseas store markets, where data security and privacy regulations may vary significantly from those in their home country. The construction of an information security management system (ISMS) is essential for ensuring the protection of sensitive data, particularly in the context of customer relationship management (CRM) digital transformation. As companies expand their operations into overseas store markets, they must adapt their data security management models to comply with local regulations and safeguard customer information effectively. The article "Information security management system construction: Data security management model for CRM digital transformation in overseas store markets" delves into the intricacies of developing a data security management model tailored to the unique challenges of CRM digital transformation in overseas store markets. The model outlined in the article emphasizes the need for a comprehensive approach to data security, encompassing not only technological solutions but also organizational policies and procedures. One of the key aspects highlighted in the article is the importance of understanding the regulatory landscape in overseas store markets. This involves conducting a thorough assessment of data protection laws and privacy regulations to ensure compliance and mitigate the risk of legal repercussions. Additionally, the article emphasizes the need for clear communication and collaboration between different departments within the organization to align data security practices with the overarching CRM digital transformation strategy. Furthermore, the article underscores the significance of leveraging advanced technologies and encryption methods to protect sensitive customer data. This includes implementing robust access controls, encryption protocols, and data masking techniques to prevent unauthorized access and data breaches. The article also emphasizes the need for continuous monitoring and assessment of the data security management model to identify and address potential vulnerabilities proactively. In conclusion, the construction of an effective information security management system is paramount for companies embarking on CRM digital transformation in overseas store markets. By developing a data security management model that aligns with local regulations, leverages advanced technologies, and fosters collaboration across the organization, companies can safeguard customer data and uphold their commitment to privacy and security. The insights provided in the article serve as a valuable guide for companies seeking to navigate the complexities of data security in the context of overseas store markets.