WordPress has been slammed by a second distributed denial of service (DDoS) attack in two days. The popular blogging platform was hit by an It's still unclear who's behind the attacks, which WordPress founder Matt Mullenweg called "the largest and most sustained" the service has seen in its six-year history. Mullenweg suspects the DDoS attacks may have been politically motivated against a non-English blog, but the company is still investigating and doesn't have a definitive answer yet.