https://www.atlanticcouncil.org/blogs/ukrainealert/concerns-grow-over-possible-russian-sabotage-of-undersea-cables/
The worlds critical undersea infrastructure is largely unguarded and its exact positions are available in the public domain, creating a potentially tempting target for the Kremlin. Western intelligence officials believe Russias efforts to monitor and build up technical capability to access this vast undersea infrastructure are expanding and are currently spread among a number of different branches of the countrys military and security services, including the Russian Navy and the Main Directorate for Deep Sea Research (GUGI).
Since the full-scale invasion of Ukraine began just over two and a half years ago, reports of suspicious Russian activity close to undersea cables have been mounting. This threat to underwater infrastructure is viewed as one of the many tools in a far broader Kremlin toolbox of hybrid warfare methods against the West.
In September 2024, CIA and MI6 chiefs accused Russia of engaging in a reckless campaign of sabotage across Europe. Alleged recent Russian attacks on communications systems have included disruption to the Global Positioning System (GPS) that affected thousands of civilian passenger flights in the Baltic Sea, Black Sea, and eastern Mediterranean regions.