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The DNS Backbone DDoS Attacks have been several significant Internet events in which distributed denial of service attacks (DDoS) have targeted one or more of the thirteen DNS root servers. These attacks are extremely significant, as the root nameservers function as the Internet backbone, translating text-based Internet hostnames into IP addresses. As the nameservers provide this service for DNS lookups worldwide, attacks against the root nameservers are attempts to disable the Internet itself, rather than specific websites.

Contents 1 October 22, 2002 2 February 6, 2007 3 April 5, 2007 4 See also 5 External links

The first attack occurred on October 22, 2002, and lasted for approximately one hour. Of the thirteen servers, nine were disabled but the remaining four were able to cope.

This event was the first significant attack directed at trying to disable the Internet itself, instead of specific websites. The largest malfunction of the DNS servers before this event were seven machines in July 1997, due to a technical problem.

A second attack occurred on February 6, 2007. The attack began at 10:30 UTC, and lasted about five hours. Although none of the servers crashed, two of the root servers reportedly "suffered badly", while others saw "heavy traffic". The botnet responsible for the attack has reportedly been traced to South Korea. [1]

ESPN Radio host Colin Cowherd launched a DNS attack on popular sports media blog thebiglead.com after the website made an entry criticizing Cowherd. After the post was brought to Cowherd's attention, he told his audience to retaliate against the blog by blocking it off from the public. [2]

On February 8, 2007 it was announced by Network World that "If the United States found itself under a major cyberattack aimed at undermining the nation’s critical information infrastructure, the Department of Defense is prepared, based on the authority of the president, to launch a cyber counterattack or an actual bombing of an attack source."[3] This is likely due to one of the DNS root servers being under the control of the United States Department of Defense.

• Denial-of-service attack
• Root nameservers

• Significant Internet events
• Internet Traffic Report's synopsis
• D Root Server's operational report of the attack
• InfomationWeek article on February 2007 attack
• News article
• Cowherd attacks TheBigLead