UK Submarine Cable Security is All at Sea

upstart writes:

Guess how much of Britain's direct transatlantic data capacity runs through two cables in Bude?:

Feature The first transatlantic cable, laid in 1858, delivered a little over 700 messages before promptly dying a few weeks later. 167 years on, the undersea cables connecting the UK to the outside world process 220 billion in daily financial transactions. Now, the UK Parliament's Joint Committee on National Security Strategy (JCNSS) has told the government that it has to do a better job of protecting them.

The Committee's report, released on September 19, calls the government "too timid" in its approach to protecting the cables that snake from the UK to various destinations around the world. It warns that "security vulnerabilities abound" in the UK's undersea cable infrastructure, when even a simple anchor-drag can cause major damage.

There are 64 cables connecting the UK to the outside world, according to the report, carrying most of the country's internet traffic. Satellites can't shoulder the data volumes involved, are too expensive, and only account for around 5 percent of traffic globally.

These cables are invaluable to the UK economy, but they're also difficult to protect. They are heavily shielded in the shallow sea close to those points. That's because accidental damage from fishing operations and other vessels is common. On average, around 200 cables suffer faults each year. But as they get further out, the shielding is less robust. Instead, the companies that lay the cables rely on the depth of the sea to do its job (you'll be pleased to hear that sharks don't generally munch on them).

The report praises a strong cable infrastructure, and admits that in some areas at least we have the redundancy in the cable infrastructure to handle disruptions. For example, it notes that 75 percent of UK transatlantic traffic routes through two cables that come ashore in Bude, Cornwall. That seems like quite the vulnerability, but it acknowledges that we have plenty of infrastructure to route around if anything happened to them. There is "no imminent threat to the UK's national connectivity," it soothes.

But it simultaneously cautions against adopting what it describes as "business-as-usual" views in the industry. The government "focuses too much on having 'lots of cables' and pays insufficient attention to the system's actual ability to absorb unexpected shocks," it frets. It warns that "the impacts on connectivity would be much more serious," if onward connections to Europe suffered as part of a coordinated attack.

"While our national connectivity does not face immediate danger, we must prepare for the possibility that our cables can be threatened in the event of a security crisis," it says.

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