Regulators focus on how the company manages personal data transfers from European Union citizens to China.
The watchdog will assess whether Shein maintains strict compliance with established EU privacy regulations.
Officials specifically target obligations under the General Data Protection Regulation, the gold standard for digital safety.
This investigation marks a significant step in monitoring how global e-commerce platforms handle sensitive user information.
The commission seeks to ensure that international data flows do not compromise the rights of European consumers.
Shein must demonstrate that its current systems provide adequate protection for millions of active online shoppers.
Legal experts suggest this case could set a vital regulatory precedent for other major cross-border retailers.
The DPC continues to prioritize digital privacy rights as high-growth platforms expand their reach across Europe.
