Finland Deploys DAS to Guard Baltic Cables as 9 Suspected Sabotage Incidents Raise Alarm
Updated
Updated · Boy Genius Report · Jun 23
Finland Deploys DAS to Guard Baltic Cables as 9 Suspected Sabotage Incidents Raise Alarm
1 articles · Updated · Boy Genius Report · Jun 23
Summary
Finland's Border Guard, Navy and Elisa have finished field tests of Distributed Acoustic Sensing and will use it in the Gulf of Finland to warn authorities and cable operators of threats to undersea links.
DAS turns fiber-optic cables into vibration sensors by sending light pulses through them, allowing operators to detect activity such as anchors dragging along the seabed and ideally intervene before damage occurs.
Late-2024 cable cuts caused outages on links between Finland and Estonia, Finland and Germany, and Lithuania and Sweden, sharpening concern over critical infrastructure in the Baltic Sea.
At least 9 suspicious anchor-dragging incidents since 2024 in the Baltic and near Taiwan have fueled fears of state-backed sabotage against cables that carry about 99% of global internet traffic.
Other defenses are also emerging, including AI tools to filter DAS alerts, autonomous underwater vehicles for inspections, and satellite backups such as Starlink when damaged cables disrupt service.
With nations guarding cables at sea, is the internet's biggest vulnerability actually sitting unprotected on land?
Tech giants are racing to lay new AI cables. Are governments prepared to protect this privately-owned critical infrastructure?
As new tech spots undersea threats in real-time, can outdated maritime laws ever catch up to deliver justice?
Hybrid Warfare in the Baltic: How Finland and NATO Are Protecting Undersea Cables with Advanced Sensing Technology
Overview
Since 2024, the Baltic Sea region has faced a sharp rise in attacks on critical undersea cables, which are essential for global internet and financial systems. Investigations found that while some cable disruptions were accidental, others were deliberate acts of sabotage. Russia’s so-called shadow fleet has been linked to these incidents, including a major event where the tanker Eagle S struck multiple cables in the Gulf of Finland. Finnish authorities, already monitoring the vessel, took action by boarding and detaining it in their Exclusive Economic Zone. These events highlight the growing threat to vital infrastructure and the urgent need for stronger defenses.