A significant alleged breach has occurred at China's National Supercomputing Center, with a hacker claiming to have stolen over 10 petabytes of sensitive data, including military and aerospace information1. This massive data exfiltration poses serious risks to national security, as the facility supports a large number of scientific and defense organizations. The breach has sparked concerns about the potential consequences of such a large-scale data exposure, particularly given the sensitive nature of the information involved. The fact that a single hacker was able to access and steal such a vast amount of data raises questions about the center's security measures and the potential vulnerabilities that may have been exploited. This incident matters to practitioners because a breach of this magnitude in China can have far-reaching implications for global cybersecurity and may lead to downstream regulatory and supply-chain effects, making it essential for organizations to be vigilant and proactive in their security measures.