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Report: DDoS Attacks Getting Bigger, Faster Than Ever

DDoS attacks of more than 10 Gbps now happen several times a day across the globe, study says

Distributed denial-of-service (DDoS) attacks are steadily increasing in size and speed, creating new problems for enterprise defenses, according to a study published today.

Arbor Networks' first quarter ATLAS report, which measures the size and speed of DDoS attacks, says the average size of a DDoS attack continues to grow at about 20 percent a year. The average attack during Q1 was about 1.77 Gbps, up from about 1.48 Gbps in 2012.

While the recent attack on Spamhaus set new records at more than 300 Gbps, the average attack is still less than 2 Gbps, according to Arbor Networks. Still, the proportion of attacks that are in the 2 Gbps to 10 Gbps range has grown from 15 percent to 21.5 percent, the study says.

In fact, in Q1 alone, Arbor has already seen about 74 percent of the total number number of attacks exceeding 10 Gbps as it saw in all of 2012, the report says. "Attacks above 10 [Gbps] and even 20 Gbps now occur multiple times per day somewhere in the world," the security firm says.

An average attack is more than enough to overwhelm most enterprise defenses, experts say.

"A common response by many administrators to the challenges of DDoS is the belief that their firewall and IPS infrastructure will protect them from attack. Unfortunately, this is not true," says Richard Martinez, enterprise network security analyst at Frost & Sullivan. "Firewalls and IPS devices, while critical to network protection, are not adequate to protect against complex DDoS attacks."

Have a comment on this story? Please click "Add a Comment" below. If you'd like to contact Dark Reading's editors directly, send us a message. Tim Wilson is Editor in Chief and co-founder of Dark Reading.com, UBM Tech's online community for information security professionals. He is responsible for managing the site, assigning and editing content, and writing breaking news stories. Wilson has been recognized as one ... View Full Bio

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User Rank: Apprentice
4/26/2013 | 2:05:51 PM
re: Report: DDoS Attacks Getting Bigger, Faster Than Ever
You do realize that it isn't just one IP address involved in distributed denial of service (DDoS).attacks. There can be thousands of requests over thousands of addresses that overwhelms the server.
User Rank: Apprentice
4/25/2013 | 12:25:55 PM
re: Report: DDoS Attacks Getting Bigger, Faster Than Ever
pinging a router looking for port 8080 repeatedly would seem similar. Why do they(ISP?) not just set up a ip-addy 'blocked call' list? The IP addy that exhibits the DDoS attack behavior should be easy to pick out. a few thousand? a few hundred blocked 'calls'? Seems the response time would only be slowed marginally by denying the bandwidth in the first place vs. the timne to allocate all the resources of the server for a legitimate reason. The list could 'rollover' (so to speak) like ip addys do (midnight?). my .02$...
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