DNS servers--an Internet Achilles' heel | CNET News.com

DNS servers--an Internet Achilles' heel | CNET News.com: "There are about 9 million DNS servers on the Internet, Kaminsky said. Using a high-bandwidth connection provided by Prolexic Technologies, he examined 2.5 million. Of those, 230,000 were identified as potentially vulnerable, 60,000 are very likely to be open to this specific type of attack, and 13,000 have a cache that can definitely be poisoned. "