Chinese military researchers are sounding the alarm about the vulnerability of submarine cables, which carry approximately 99% of global data. They argue these cables are increasingly susceptible to attacks from inexpensive drones, posing a significant threat to the international digital economy. Traditionally considered secure due to the difficulty and expense of undersea exploration and control, the seabed is now seen as a new frontier for strategic competition. The researchers highlight that the cost of engaging in “undersea warfare” is decreasing, lowering the barrier to entry for potential adversaries. This assessment suggests a shift in the landscape of global security, with undersea infrastructure becoming a potential target in great power rivalry. The study underscores the need for increased monitoring and protection of these critical cables.