Over the last week, four major undersea cables have been disrupted (three were cut, with two of those co-located, and a fourth was malfunctioning). The damage so far includes reduced Internet service for most of the Middle East and a short term brown out of connectivity for India (which impacted India's outsourcing business). Rerouting and repairs should clean up the damage in the next week or so.
Some observations:- Vulnerability. All of the same network vulnerabilities we see other infrastructures are in force with the Internet's long haul systems (the network analysis of systempunkts applies). If this was a real attack rather than a series of accidents (the geographical concentration is interesting in this regard), then this was likely a capabilities test that yielded data on response times, impact, and duration.
- Means. Attacks on undersea cables are within the capacity of small groups to accomplish. With precise mapping (these cables take very circuitous routes), a cable could be cut with as little as an anchor. However, nation-states are the most capable in this sphere (including, a growing number of micropowers). Why would a nation-state do this? Deterrence. Disconnection from the global communications grid is very likely to become a form of economic/social coercion in the future (for standard national security reasons all the way down to an inability/unwillingness to crack down on rampant Internet crime, which is growing into a HUGE global problem).
- Precision. It's very hard to precisely target an attack's damage. Regional impacts are unavoidable (collective punishment for everyone that connects to the target country?). Here's a final point to consider: closed systems like China's that route traffic through firewall choke-points, or other closely held infrastructure, are likely very vulnerable to an attack of this type.