Go Daddy was hit by "significant and sustained" distributed denial of service attacks on Sunday morning—not glitches caused by the switch to daylight-saving time, as the Internet Storm Center had postulated over the weekend.
Go Daddy Chief Information Security Officer Neil Warner issued a statement saying that the DDoS attacks caused intermittent service disruptions to services included shared hosting and e-mail.
Warner said in the release that Go Daddy's Internet Security and Network teams "immediately invoked counter-measures to respond to these large scale, sophisticated attacks," managing to contain the attack after 4 to 5 hours.
Warner said that the domain name provider's Internet Security and Network teams will continue forensics on the attacks with an eye to beefing up defense.
"Go Daddy has made and will be continuing to make significant investments in our information security infrastructure to protect from these shifting types of attacks," Warner said in the statement.
The service disruption was "in no way related to the switch to daylight-saving time," Warner said. "With regard to DST, Go Daddy has been engaged in preparation and patching and worked closely with our vendors for some time leading up to the DST change," he said.