Thief EpicThomas:
https://bitcointalk.org/index.php?action=profile;u=172850;sa=showPosts
Owner of "epicdices.com" (http://domain-kb.com/www/epicdices.com)

Thief posts made by nick EpicThomas (originally with a link to the hacked client):
31-12-2013, 14:23:22: https://bitcointalk.org/index.php?topic=345619.msg4237883#msg4237883
31-12-2013, 12:53:39: https://bitcointalk.org/index.php?topic=345619.msg4236707#msg4236707
28-12-2013, 13:28:54: https://bitcointalk.org/index.php?topic=345619.msg4184582#msg4184582

Since there were other thefts before these posts, older posts were deleted or posted by other account.

Thefts from block:
http://87.230.14.1/nxt/nxt.cgi?action=1000&blk=17240155162180650056:

01.01.2014 12:56:54 18,665 Nxt from plasticAiredale     http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=15182566201738727933
01.01.2014 12:58:03 7,808 Nxt from PaulyC   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=16204974692852323982 (more older thefts here) A
01.01.2014 13:01:45   18,197 Nxt from newcn   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=9793828175536096502
01.01.2014 13:03:39 92 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 (more older thefts here) B
01.01.2014 13:05:06 147,690 Nxt from sparta_cuss    http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=12152013998194592943

Thefts from block:
http://87.230.14.1/nxt/nxt.cgi?action=1000&blk=11727357463857289892

29.12.2013 08:21:32      99 Nxt   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=16204974692852323982 A
29.12.2013 08:20:26      55 Nxt   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=16204974692852323982 A
29.12.2013 08:19:32      502 Nxt   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=16204974692852323982 A
29.12.2013 08:19:00      499 Nxt   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=16204974692852323982 A

Single thefts (blocks checked):
27.12.2013 00:03:22      509 Nxt  http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B
26.12.2013 20:26:15      499 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B
26.12.2013 18:39:14          500 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B
26.12.2013 12:53:07           98 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B

block: http://87.230.14.1/nxt/nxt.cgi?action=1000&blk=7058684459482772470
25.12.2013 18:25:25      999   Nxt   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B
25.12.2013 18:24:54      705   Nxt   http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B

Single thefts (blocks checked):
25.12.2013 14:59:46      499  Nxt    http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B

block: http://87.230.14.1/nxt/nxt.cgi?action=1000&blk=15904983691408191996
23.12.2013 19:06:16      255 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B
23.12.2013 19:08:26         1,004 http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=10543042600713097314 (?? - not sure if theft)

23.12.2013 19:05:48  499 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542 B

22.12.2013 09:22:08 999 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542&offset=11&filter=1 B
16.12.2013 15:48:56 3,874 Nxt http://87.230.14.1/nxt/nxt.cgi?action=3000&acc=6164081464868000542&offset=11&filter=1 B