CCP Spielmann -
At 02:05 UTC June 2nd, CCP became aware of a significant and sustained distributed denial-of-service attack (DDoS) against the Tranquility cluster (which houses EVE Online and DUST 514) and web servers.
What we can now confirm is that a person was able to utilize a vulnerability in one of the back-end services that support the operation of the Tranquility server. This vulnerability has now been secured and thoroughly tested.
We would like to stress that at no time was customer data compromised or accessible in any way.
We will be looking at ways to compensate players in both EVE and DUST for the outage and expect to announce what that compensation will be very soon.