About a month after attacks on the DNS root servers, UltraDNS, the company that manages the .info and .org top-level domains, has suffered a Distributed Denial of Service Attack. Ben Petro, CEO of UltraDNS, said, "This is the largest attack that we've seen", but stressed that it didn't affect the company's core domain name system (DNS) services.
The organisations that manage the top level domains are used to handling high loads and are well aware of the importance of their services. A successful attack would affect every organisation under those top level domains, and anyone trying to contact them.
Tracing the origin of the attacks, and punishing the perpetrator(s), is a problem because they use networks of "zombies" - machines that have been broken into, with remotely-controlled attach software installed. The initial trace leads to more victims.