"The number one motivation is still ideological hacktivism - not surprising given media coverage this year," Arbor says. "Online gaming is up from third to second and nearly 15 percent [of respondents] are seeing attacks motivated by extortion, competitive rivalry or as a cover for data exfiltration."
According to Arbor's survey, "Ninety four percent of data centres are seeing DDoS attacks regularly. Just over a third see firewalls fail due to DDoS attacks." It added, "As more companies move their services to the cloud shared risk is more of an issue...83.3 percent of respondents now see between 1 and 50 attacks per month.
According to Nick Race, Arbor's country manager for Australia, the sophistication of DDoS attacks has increased significantly from simple brute force attacks where the attacker seeks to flood the victim's servers with so much traffic that data pipes become clogged and servers fail through overload.
Late last year DDoS attacks were launched on a number of US banks by a Muslim hacktivist group calling itself the Cyber fighters of Izz ad-din Al qassam in a bid to get the controversial movie 'The Innocence of Muslims' removed from the Internet.
According to Race, "This was the first time we have seen multivectored DDoS attacks." He explained: "There are two types of DDoS: the volumetric and the application, Volumetric is designed to physically overload the pipes. The application DDoS targets specific infrastructure like a web server or DNS server.
"What we saw with the US banks was that the attackers were using both types of attacks simultaneously...It was a very sophisticated attack that targeted multiple companies simultaneously."
Such attacks have become very easy to launch, without specialist knowledge, Race said. "It is very easy to get attack tools on the Internet. You can go to companies that will do attacks for you and even offer SLAs on their attack! For $50 you can a one gigabit attack for 24 hours anywhere in the world. It makes it very easy to launch this type of attack."
He said that, with the increasing popularity of cloud computing, it was essential that data centre operators provided protection for their clients. "If they are providing Iaas or PaaS it is really the cloud service provider who should be providing the security associated with that. You only need one tenant to be attacked and they can take down every other tenant in that data centre. It is really important to choose one that has the required level or protection."
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