Chinese Shipping Giant COSCO Accused of Using Hidden Spy Equipment Near U.S. Coasts to Collect American Military Communications
China’s enormous commercial shipping network may be serving a mission far beyond moving containers. Senior U.S. officials say state-owned shipping giant COSCO has equipped vessels with concealed, sophisticated signals-intelligence systems capable of collecting military communications near the coastlines of the United States and other countries. According to a Reuters investigation published September 1, American officials assess that COSCO has maintained a decades-long intelligence relationship with Beijing, giving China a civilian maritime platform capable of monitoring communications from ships and aircraft across North America, Europe and Asia. The allegation dramatically raises the stakes surrounding one of the world’s largest shipping companies because COSCO remains deeply embedded in global trade and continues calling at American ports even as the Pentagon identifies its parent company as a Chinese military company.
The intelligence reportedly being collected is highly sensitive. One U.S. official told Reuters that the concealed equipment was intended to gather information about military communications technologies and encryption developments. The systems were described as sophisticated signals-intelligence collection platforms rather than ordinary communications hardware installed for commercial shipping operations. U.S. officials also said Beijing can use information collected through these ships to monitor strategically important shipping lanes, support maritime reconnaissance and provide early-warning indications concerning foreign military targets. That means an apparently routine Chinese container vessel sailing near an American coastline could potentially have value to Beijing far beyond its cargo manifest.
For Americans, the security problem begins with proximity. Commercial vessels routinely operate near major ports, naval installations, shipping channels and coastal infrastructure. Unlike a Chinese military intelligence ship, which would immediately attract scrutiny, a commercial container vessel has an obvious civilian reason to enter busy maritime environments. It can approach strategically important coastlines as part of normal international trade, remain in commercially active waters and travel repeatedly through locations where naval vessels, military aircraft and logistics operations are active. If sophisticated signals-intelligence equipment is concealed aboard such ships, commercial access itself becomes an intelligence advantage.
The U.S. assessment also deserves attention because COSCO is no ordinary private shipping company. China COSCO Shipping Corporation is state-owned, and the Pentagon formally placed it on the Section 1260H list of Chinese military companies operating directly or indirectly in the United States in January 2025. The Defense Department describes the 1260H process as part of its effort to counter China’s Military-Civil Fusion strategy, through which the People’s Liberation Army can gain access to technologies, expertise and capabilities developed by Chinese organizations that outwardly appear civilian. COSCO SHIPPING, COSCO SHIPPING North America and COSCO SHIPPING Finance were specifically included in the Pentagon’s published list.
That military-civil relationship is particularly important in maritime logistics. A state-owned shipping enterprise possesses ships, crews, port access, shipping schedules, global communications systems and intimate knowledge of the commercial routes connecting America with the rest of the world. Those capabilities are economically valuable during peacetime and potentially valuable for military intelligence as well. A shipping company can observe port activity, naval traffic, shipping patterns and infrastructure over long periods simply through the normal operation of its fleet. Adding specialized collection equipment could transform that commercial presence into a persistent intelligence network operating across international waters and near foreign coastlines.
Research from the U.S. Naval War College reinforces the concern that Beijing views civilian maritime assets as useful intelligence platforms. A 2025 China Maritime Studies Institute report concluded that collecting and reporting maritime intelligence is a core mission of China’s maritime militia and noted that PLA thinkers have discussed taking advantage of China’s distant-water fishing fleet and Chinese-owned or operated merchant vessels for intelligence, surveillance and reconnaissance. The report further observed that PLA experts have advocated placing intelligence personnel aboard Chinese vessels operating overseas and assessed that such activity is likely already occurring. The latest allegations involving COSCO therefore fit into a broader Chinese maritime doctrine in which civilian-looking platforms can contribute to military situational awareness.
This creates a serious asymmetry for the United States. American ports are built to facilitate commerce. Container ships need predictable access, efficient unloading and connections to rail, trucking and warehouse networks. A massive global carrier becomes deeply integrated into that system because removing it abruptly can disrupt supply chains and raise transportation costs. Johns Hopkins maritime-strategy expert Isaac Kardon told Reuters that COSCO is so deeply woven into American trade networks that eliminating it from those systems could resemble “life-threatening surgery” for U.S. commerce. That dependence itself creates strategic leverage. A company can become simultaneously important to American trade and troubling to American national security.
The concern becomes even greater because COSCO has terminal-service joint ventures connected to American ports. Port operations reveal more than the arrival and departure of commercial cargo. They can expose patterns of infrastructure use, vessel movement, logistics capacity and maritime traffic. During a geopolitical confrontation, detailed knowledge of shipping lanes and military activity could help China distinguish routine commercial patterns from unusual mobilization. Intelligence gathered over years can establish a baseline, making deviations during a crisis easier to detect.
Signals intelligence has similar value. Militaries rely on communications networks whose frequencies, protocols, operating patterns and encryption technologies can reveal useful information even when the underlying messages cannot immediately be read. A sophisticated collection system positioned close enough to observe those emissions can help analysts characterize networks, identify emitters, study changes in communications behavior and develop a clearer picture of military operations. Reuters reported that U.S. officials specifically identified military communications technology and encryption development as targets of the alleged COSCO collection effort. For China, that information could improve reconnaissance and early warning during an Indo-Pacific crisis involving U.S. forces.
The Taiwan scenario makes this especially consequential. Any major confrontation around Taiwan would require the United States to move ships, aircraft, personnel, equipment and supplies across the Pacific. Beijing would want the earliest possible indications of American military preparation. A broad intelligence architecture incorporating satellites, cyber operations, shore-based sensors, fishing vessels, merchant ships and other civilian platforms could provide China with multiple overlapping sources of information. Commercial shipping therefore cannot be viewed solely through an economic lens when the same vessels may contribute to military reconnaissance.
COSCO’s global scale amplifies the potential problem. Individual intelligence ships can be tracked. A large commercial fleet regularly operating around the world creates a much wider geographic footprint, and routine merchant traffic can provide natural cover for repeated presence. A container ship does not need to behave unusually to collect useful signals if the collection system is passive and hidden. It merely needs to sail through strategically valuable waters while appearing to perform the commercial mission everyone already expects.
American port security should respond accordingly. Vessels owned or controlled by entities on the Pentagon’s Chinese military-company list deserve heightened technical scrutiny when entering sensitive maritime environments. Authorities should be capable of detecting unauthorized radio-frequency collection systems, unusual antennas, concealed sensors and modifications inconsistent with commercial operations. Port operators should also limit unnecessary access to sensitive logistics information and carefully evaluate what data foreign shipping companies can obtain through terminal-management systems, scheduling platforms and port technology.
The United States also needs alternatives before dependence becomes leverage. Completely removing one of the world’s largest shipping companies overnight could impose enormous economic costs, especially when American importers and exporters depend on established routes. Long-term diversification offers a more durable solution. U.S. trade should rely more heavily on carriers and port-service providers from trusted countries, while American shipbuilding and merchant-marine capacity should expand so that national security does not depend indefinitely on a Chinese state-owned enterprise already identified by the Pentagon as connected to China’s military ecosystem.
The larger warning reaches well beyond COSCO. Beijing’s military-civil fusion system makes the distinction between civilian commerce and national power increasingly dangerous to take for granted. Telecommunications providers can support communications access. Technology companies can provide data and computing capabilities. Universities can contribute research expertise. Commercial shipping fleets can provide geographic reach, logistics knowledge and potentially signals intelligence. China possesses enormous civilian industrial networks precisely because it is one of the world’s largest trading powers, and those networks can generate strategic advantages when the state can call upon them for national objectives.
Americans should therefore understand what the COSCO allegations represent. The security question surrounding Chinese shipping is no longer confined to who carries containers into Long Beach, Los Angeles, New York or other American ports. U.S. officials now say a Chinese state-owned shipping giant has used concealed equipment aboard commercial vessels to gather intelligence relevant to military communications and maritime operations. COSCO is simultaneously a major participant in American trade and an entity formally listed by the Pentagon as a Chinese military company. That combination should fundamentally change how Washington evaluates Chinese commercial access near sensitive American infrastructure.
The United States cannot afford to discover during a future Pacific crisis that commercial ships operating routinely near its coastline had spent years helping Beijing understand American communications, maritime patterns and military movements. China has already demonstrated a model in which civilian-looking infrastructure can serve broader state objectives. If American officials’ COSCO assessment is correct, Beijing has extended that model onto the oceans, hiding intelligence collection inside the ordinary machinery of global trade. America’s ports may remain open to commerce, but access to the U.S. maritime system should never mean unrestricted opportunity for a strategic competitor to observe the military capabilities protecting the country.
