After looking at a number of support tickets that came in and tracking those accounts down in the game logs, we determined that a small number of accounts lost TERA reward credits and points during a DDoS attack. Our operations team has given me a list of people on MT that were affected and I'm in the process of manually adding back the missing points and credits. I will get a list of the players on the other servers over the next couple of days and credit them as well.