Undersea cables: How do they work and why are they so vulnerable? Part 1 Part 2

Undersea cables: How do they work and why are they so vulnerable? Part 1 Part 2 Tens of thousands submarine internet cables have been laid on the seabed over the past decades. The latest disruption of two of them in the Baltic Sea has once again raised their security issue. What are submarine cables? ▪️Each modern undersea cables contains multiple optical fibers to carry digital internet and telephone data at a maximum speed of ten terabits (Tbit) per second. The MAREA cable boasts 26.2 Tbit/s per fiber pair; ▪️They are typically 25 mm (1 in) in diameter: thin glass fibers are wrapped in layers of plastic and/or steel wire to survive in the deep ocean environment. How are the undersea cables protected? ▪️The cables are laid between 1-2 meters below the seabed to protect them from trawlers and anchors, which may damage the infrastructure. Electronic monitoring systems proactively detect anomalies. ▪️They are protected by national regulations within territorial waters and by th... Source: Geopolitics Live