A US Navy sailor has been convicted of espionage for leaking classified information to Chinese intelligence, including details on naval exercises and missile systems. Stationed in Japan, the sailor received $15,000 for the information, compromising US operations in the Indo-Pacific. This incident highlights the escalating threat of Chinese espionage amid tensions in the South China Sea, prompting the Department of Defense to enhance counterintelligence measures. With multiple similar cases in recent years, experts warn that such breaches could diminish US technological superiority in military capabilities, underscoring the need for vigilant defense strategies to safeguard national interests.