Akamai, 1st Quarter 2008 – The State of the Internet Report.

“During the first quarter, Akamai observed attack traffic originating from 125 unique countries around the world. China and the United States were the two largest attack traffic sources, accounting for some 30% of this traffic in total. Akamai observed attack traffic targeted at 23 unique network ports. Many of the ports that saw the highest levels of attack traffic were targeted by worms, viruses, and bots that spread across the Internet several years ago. A number of major network “events” occurred during the first quarter that impacted millions of Internet users. Cable cuts in the Mediterranean Sea severed Internet connectivity between the Middle East and Europe, drastically slowing communications. Cogent’s de-peering of Telia
impacted Internet communications for selected Internet users in the United States and Europe for a two-week period. A routing change by Pakistan Telecom that spread across the Internet essentially took YouTube, a popular Internet video sharing site, offline for several hours.