IMDB victim of denial-of-service attack

IMDB victim of denial-of-service attack
IMDB victim of denial-of-service attack 

By Robert Vamosi
Defense in Depth
June 7, 2008 

On Friday, Internet movie database IMDB fell victim to a sustained 
distributed denial-of-service (DDoS) attack that coincided with being offline, says one researcher.

Soups Ranjan, a senior member of the technical staff of network 
protection and management company Narus, said in a blog that he found 
evidence that at least one of the IP addresses used by IMDB fell under a 
sustained DDoS attack between 10:30 a.m. and 1:30 p.m. PDT Friday.

"My attempt to load the IMDB page via a direct connection to the Web 
server under attack ( doesn't load the images at 
all. It becomes interesting when you realize that IMDB seems to be 
hosted using Amazon Web Service (AWS) since this IP-address is 
registered as belonging to Amazon."

Ranjan noted that the duration of the attack on IMDB coincided with the 
amount of time that Amazon was offline on Friday.

He also provided some details, saying that "the attacker seemed to open 
multiple connections with the IMDB's Web server (port 80) while 
incrementing his source port for every new connection. The attack's 
average rate was 3Mbits/sec, certainly not large enough to cause a 
complete meltdown but probably good enough to delay the legit users. 
However, there might have been other attacks launched at the same time 
on IMDB which weren't in the path of our probes."

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