EVE Online or DUST 514 this afternoon, you might want to go with your backup plan. CCP has taken its Tranquility server cluster offline in order to deal with a "significant and sustained distributed denial-of-service (DDoS) attack."
Tranquility hosts EVE and DUST players, and while CCP initially reopened the servers, it has since decided to close them down in order to conduct an investigation and "an exhaustive scan of our entire infrastructure." The outage also affects CCP's web presence. You can follow the situation via the company's Twitter feed.
[Thanks to everyone who tipped us.]