AWS servers hit by sustained DDoS attack

guest · Oct 23, 2019

AWS servers hit by sustained DDoS attack
Day long outage caused by Route 53 DNS system disruption
October 23, 2019
https://www.itpro.co.uk/amazon-web-services-aws/34679/aws-servers-hit-by-sustained-ddos-attack

Businesses were unable to service their customers for approximately eight hours yesterday after Amazon Web Services (AWS) servers were struck by a distributed denial-of-service (DDoS) attack.

After initially flagging DNS resolution errors, customers were informed that the Route 53 domain name system (DNS) was in the midst of an attack, according to statements from AWS Support circulating on social media.

"We are investigating reports of occasional DNS resolution errors. The AWS DNS servers are currently under a DDoS attack," said a statement from AWS Support, circulated to customers and published across social media.
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CBR: AWS Hit by DDoS Attack – Google Cloud Also Impacted?

The attack must have been at a huge scale
AWS late yesterday was hit by a sustained DDoS attack, which appears to have lasted some eight hours. The incident hit its Route 53 DNS web offering, knocking down other services and raises many questions about the nature of the attack and about AWS’s own DDoS mitigation service, “Shield Advanced”.

AWS users on Reddit said they had found Aurora (a MySQL and PostgreSQL-compatible database) clusters also unreachable, with many complaining that their customers had been left unable to use cloud services for several hours.
Given the sheer size of AWS and the traffic it handles at any given time, the attack must have been significant. It is not clear if a more detailed autopsy will be forthcoming. (Critics noted that AWS’s Route 53 Service Level Agreement (SLA) promises 100 percent uptime…

Fun fact: Route53 is the only AWS service with a 100% uptime SLA. Unfun fact: AWS SLAs are mostly meaningless and Route53 is having issues right now. pic.twitter.com/pye416pync
— Scott Piper (@0xdabbad00) October 22, 2019
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