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Gates of Corero Network Security added that it takes a multipronged approach in order to maximize your defensive posture. "You have to leverage the ISP as well as boutique anti-DDoS providers as well as on-premise solutions, like Corero," he said. "Once they fill the pipe, you've got to go upstream with on-premises technology that can defeat the low-and-slow application layer attacks. They also need to look at how to leverage different types of content distribution networks for their static content in order to further maximize their security."
Arbor Networks' Wilson agrees with the point, stressing the need for a multipronged approach.
"If you can get defenses synced up between on-premise and your provider, that's really helpful," he said. "Also it's important to harden the infrastructure. People running Web servers should make sure that they keep their PHP applications up to date. They're very exploitable if they're not up to date, and they can be used to get deeper into the data center."
Previous cyberattacks associated with the Islamic group targeted Bank of America and Wells Fargo, as well as the New York Stock Exchange. In some cases, the impacted networks suffered varying levels of service interruption for a period of days.