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The Arbor survey found multivector attacks involving more than a flood of network packets is making DDoS mitigation increasingly tricky. Banks and other companies that depend on websites or Web portals for their business are taking a layered approach to handle the onslaught of traffic, contracting out to an ISP for mitigation services and additional third-party service providers to help filter traffic.
Multivector attacks are up 27 percent from 2011, driven by the fact that the automated tools used for DDoS frequently now contain additional capabilities. Application-layer attacks targeting Web services were reported by 86 percent of those surveyed. Attackers are also able to target encrypted communication services as well.
Data centers also are increasingly being targeted, with nearly 50 percent of those surveyed experiencing DDoS attacks aimed at their data centers, resulting in operational expenses as a result of a disruption in business.