snydeq writes: "Security Advisor's Roger Grimes provides insights on how to stop today's increasingly sophisticated DDoS attacks. 'The most difficult challenge has been DDoS attackers' increasing sophistication as they've moved from targeting Layers 3 and 4 (routing and transport) to Layer 7 (the application layer). They've learned, for example, how to determine which elements comprise a victim's most popular Web page, honing in on which ones take the most time to load and have the least amount of redundancy,' Grimes writes. 'The most sophisticated DDoS hackers have attacked with many vectors, one at a time, thus increasing the pain. A growing number of DDoS victims have found that attackers are using these types of multipronged, multiday assaults as ruses to draw attention from more damaging attacks elsewhere on the network. '"
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