Posted October 20, 2008 - 12:40 pm
There has been a long history of attacks on the Domain Name System ranging from brute-force denial-of-service attacks to targeted attacks requiring specialized software. In July 2008 a new DNS cache-poisoning attack was unveiled that is considered especially dangerous because it does not require substantial bandwidth or processor resources nor does it require sophisticated techniques. Here's how DNS cache poisoning works, and what can be done to prevent attacks.