Chinese A-shares have rallied with the highest trading volume in a month, driven by a surge in technology stocks amid the rise of the AI startup DeepSeek. However, this growth is accompanied by increasing scrutiny and regulatory actions against the company. The South Korean Ministry of Industry has temporarily banned access to DeepSeek for its employees due to security concerns. In the United States, lawmakers have introduced the 'No DeepSeek on Government Devices Act,' which aims to prevent federal employees from using the AI application on government-owned electronics. This bill follows reports that DeepSeek's app may have hidden code capable of transmitting user information to China Mobile, a state-owned telecommunications company. In contrast, U.S. President Donald Trump has publicly defended DeepSeek, stating that it does not pose a national security threat and could potentially benefit the U.S. economy. Meanwhile, Canada has also restricted the use of DeepSeek on government devices, reflecting a broader trend of caution towards the Chinese AI firm. As the company continues to innovate, it raises questions about the balance between technological advancement and national security.