How to protect the "soft underbelly of the world economy" ?
Questions as to how to detect and deter such attacks reveal the current judicial gaps in international treaties.
https://www.csis.org/analysis/protecting-subsea-cables-detect-deter-sue-secure

Protecting Subsea Cables: Detect to Deter, Sue to Secure
Subsea cables power global commerce. Though rare, cable attacks impose real costs. But leading technologies are democratizing maritime data and deterring would-be saboteurs. To further deter intentional cable attacks, cable owners should aggressively pursue legal remedies.




