Renesys published research which indicated that Gaddafi had shut down the internet entirely throughout Libya after the social unrest. The government shut down the internet for nearly two days before it finally came back online. Technologies like the border gateway protocol make it extremely easy to entirely shutdown connectivity throughout an entire nation.
Repeated attacks hijack huge chunks of Internet traffic, researchers warn
"Since February, they have observed 38 distinct events in which large blocks of traffic have been improperly redirected to routers at Belarusian or Icelandic service providers. The hacks, which exploit implicit trust placed in the border gateway protocol used to exchange data between large service providers, affected 'major financial institutions, governments, and network service providers' in the US, South Korea, Germany, the Czech Republic, Lithuania, Libya, and Iran."
Quick fix for an early Internet problem lives on a quarter-century later
Yakov Rekhter, one of the engineers who invented the Border Gateway Protocol (BGP routing protocol), says network operators will be reluctant to deploy stronger security measures until they see the benefits outweighing the costs. (Yana Paskova for The Washington Post)