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Summary:
Between approximately 8:30 AM ET and 10:45 AM ET (GMT +4 hours) on Tuesday, June 15, 2004, some Akamai customers using Global Traffic Manager (FirstPoint), NetStorage (Akamai Content Storage), and Akamai services that utilize Global Traffic Manager and NetStorage experienced performance and availability issues.
This incident resulted from a sophisticated, large-scale attack on Internet infrastructure. This attack impacted Akamai's Internet naming functionality (Domain Name Service or DNS), and resulted in delays in DNS name resolution and, in some cases, timed-out DNS requests. Some end users trying to reach affected sites would have experienced slow responses from the Akamai name servers, potentially resulting in page time-outs. The attack did not cause an outage in Akamai services, as Akamai continued to serve DNS requests. However, the amount and nature of attack traffic created degradation in performance.
The problem was quickly detected by Akamai's automated monitoring systems, and Akamai personnel identified the root cause as a large Internet attack. The attack was mitigated by a combination of actions by Akamai to adjust our infrastructure in response to the attack, along with working with network partners to shut down the source of the attack.
As result of these actions, all Akamai services had returned to normal operating performance by 10:45 AM ET.
Akamai is continuing to work closely with several network partners and legal authorities around the world to identify both the nature of the attack and its intended targets.
We regret any inconvenience this may have caused you or your users. Please contact your Akamai Customer Care representative at 1-877-4-AKATEC (1-877-425-2832) if you have any questions.
Service Note: One of the actions taken during the attack was to temporarily increase the DNS TTL (time to live) on responses being returned from Akamai. This action is helping end-users cache successful responses for longer, thus improving service.
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