"The Internet Cloud Actually Is On The Ocean Floor"
Paul Babicki
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How can we protect the Internet's undersea cables?
By Nicole
Starosielski from agenda.webforum.org
Nov 4 2015
This article was originally
published on The Conversation.
Read the original
article.
Recently a New York
Times article on Russian submarine activity near undersea
communications cables dredged up Cold War politics and generated widespread
recognition of the submerged systems we all depend upon.
Not many people realize that
undersea cables transport nearly 100% of
transoceanic data traffic. These lines are laid on the very bottom
of the ocean floor. They’re about as thick as a garden hose and carry the
world’s internet, phone calls and even TV transmissions between continents at
the speed of light. A single cable can carry tens of terabits of information
per second.
While researching my book The Undersea Network, I
realized that the cables we all rely on to send everything from email to
banking information across the seas remain largely unregulated and undefended.
Although they are laid by only a few companies (including the American company
SubCom and the French company Alcatel-Lucent) and often funneled along narrow
paths, the ocean’s vastness has often provided them protection.
Far from wireless
The fact that we route internet traffic
through the ocean – amidst deep sea creatures and hydrothermal vents – runs
counter to most people’s imaginings of the internet. Didn’t we develop
satellites and Wi-Fi to transmit signals through the air? Haven’t we moved to
the cloud? Undersea cable systems sound like a thing of the past.
The reality is that the cloud is actually
under the ocean. Even though they might seem behind the times, fiber-optic
cables are actually state-of-the-art global communications technologies. Since
they use light to encode information and remain unfettered by weather, cables
carry data faster and cheaper than satellites. They crisscross the continents
too – a message from New York to California also travels by fiber-optic cable.
These systems are not going to be replaced by aerial communications anytime
soon.
A vulnerable system?
The biggest problem with cable systems is not
technological – it’s human. Because they run underground, underwater and
between telephone poles, cable systems populate the same spaces we do. As a
result, we accidentally break them all the time. Local construction projects
dig up terrestrial lines. Boaters drop anchors on cables. And submarines can
pinpoint systems under the sea.
Most of the recent media coverage has been
dominated by the question of vulnerability. Are global communications networks
really at risk of disruption? What would happen if these cables were cut? Do we
need to worry about the threat of sabotage from Russian subs or terrorist
agents?
The answer to this is not black and white. Any
individual cable is always at risk, but likely far more so from boaters and
fishermen than any saboteur. Over history, the single largest cause of
disruption has been people unintentionally
dropping anchors and nets. The International
Cable Protection Committee has been working for years to
prevent such breaks.
As a result, cables today are covered in steel
armor and buried beneath the seafloor at their shore-ends, where the human
threat is most concentrated. This provides some level of protection. In the
deep sea, the ocean’s inaccessibility largely safeguards cables – they need
only to be covered with a thin polyethelene sheath. It’s not that it’s much
more difficult to sever cables in the deep ocean, it’s just that the primary
forms of interference are less likely to happen. The sea is so big and the
cables are so narrow, the probability isn’t that high that you’d run across
one.
Sabotage has actually been rare in the history
of undersea cables. There are certainly occurrences (though none recently), but
these are disproportionately publicized. The World War I German raid of the Fanning Island cable
station in the Pacific Ocean gets a lot of attention. And there
was speculation
about sabotage in the cable disruptions outside Alexandria,
Egypt in 2008, which cut 70% of the country’s internet, affecting millions. Yet
we hear little about the regular faults that occur, on average, about 200 times
each year.
Redundancy provides some protection
The fact is it’s incredibly difficult to
monitor these lines. Cable companies have been trying to do so for more than a
century, since the first telegraph lines were laid in the 1800s. But the ocean
is too vast and the lines simply too long. It would be impossible to stop every
vessel that came anywhere near critical communications cables. We’d need to
create extremely long, “no-go” zones across the ocean, which itself would
profoundly disrupt the economy.
Fewer than 300
cable systems transport almost all transoceanic traffic around
the world. And these often run through narrow pressure points where small
disruptions can have massive impacts. Since each cable can carry an
extraordinary amount of information, it’s not uncommon for an entire country to
rely on only a handful of systems. In many places, it would take only a few
cable cuts to take out large swathes of the internet. If the right cables were
disrupted at the right time, it could disrupt global internet traffic for weeks
or even months.
The thing that protects global information
traffic is the fact that there’s some redundancy built into the system. Since there
is more cable capacity than there is traffic, when there is a break,
information is automatically rerouted along other cables. Because there are
many systems linking to the United States, and a lot of internet infrastructure
is located here, a single cable outage is unlikely to cause any noticeable
effect for Americans.
Surfacing.in is an interactive platform
developed by Erik Loyer and the author that lets users navigate the
transpacific cable network.
Any single cable line has been and will continue to be susceptible to disruption. And the only way around this is to build a more diverse system. But as things are, even though individual companies each look out for their own network, there is no economic incentive or supervisory body to ensure the global system as a whole is resilient. If there’s a vulnerability to worry about, this is it.
Any single cable line has been and will continue to be susceptible to disruption. And the only way around this is to build a more diverse system. But as things are, even though individual companies each look out for their own network, there is no economic incentive or supervisory body to ensure the global system as a whole is resilient. If there’s a vulnerability to worry about, this is it.
Publication does not imply endorsement of
views by the World Economic Forum.
Author: Nicole
Starosielski is an Assistant Professor of Media, Culture
and Communication at New York University
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