NeuStar confirmed that some of its UltraDNS managed DNS service customers were knocked offline for several hours Tuesday morning by a distributed denial of service attack.

"Early this morning, our monitoring systems detected a significant denial of service attack, which affected a small subset of our customers, in some cases for as long as a few hours," the Reston, Va. company said in a statement. "While we continue to investigate the cause, the extent, and the duration of the attack, service was completely restored by 10 a.m. EST."

Read full story: Network World

Related topics: Cyberattack, Cybercrime, DNS