DDoS Attacks Targeting Internet Infrastructure

Groups monitoring the frequency and magnitude of distributed denial of
service (DDoS) attacks have noted a sharp increase in particularly
virulent attacks in the last several months. The attackers also appear
to be targeting critical Internet infrastructure systems more often. A
March attack on cloud computing provider GoGrid lasted for several days
and affected half of the company's 1,000 customers. Other attacks have
targeted web hosting providers Register.com and The Planet as well as
Brazilian Internet service provider (ISP) Telefonica. In most cases,
the attacks persisted for several days and then ceased abruptly.