DNS remains vulnerable one year after Kaminsky bug

A year has passed since security researcher Dan Kaminsky disclosed a serious flaw in the DNS that makes it possible for hackers to launch cache poisoning attacks, where traffic is redirected from a legitimate Web site to a fake one without the Web site operator or end user knowing. Kaminsky's disclosure was a wake-up call to network vendors and ISPs about the inherent weaknesses in DNS, the foundational Internet standard that matches IP addresses with domain names.

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