Microsoft disclosed that Chinese state-sponsored hackers exploited vulnerabilities in its SharePoint software, impacting numerous US agencies, including critical security departments. Notably, it was revealed that China-based engineers had long been maintaining the compromised software, raising significant security concerns over foreign access to sensitive systems. Cybersecurity experts emphasize the risks posed by allowing foreign personnel to manage vital US government infrastructure, especially given China’s extensive data collection laws. This incident has prompted US lawmakers to demand transparency from tech companies regarding foreign engineering practices, highlighting the ongoing challenges in safeguarding national security against persistent cyber threats.