The hacker seems to be a Chinese because he used Chinese punctuations in his English messages in the Aurumxchange ticket.
Yeah, I like how the 'hacker' is so inconsistent in his use of punctuation.
For example, in the aurumXchange ticket he is unable to figure out how to use English punctuation:
YES。ZHOU TONG STOLEN THE MONEY！
HE GAVE ME THE MT CODES AND I USED YOUR EXCHANGE TO CHANGE TO LR。NOW I WANT TO WITHDRAW THEM！
MY MONEY IS CLEAN，PLEASE GIVE ME NOW！
But in the earlier hotmail message to Zhou he had apparently no such issues:
From: Bitcoinica Sucks <
bitcoinicasucks@hotmail.com>
To:
verify@bitcoinica.comDate: Friday, 13 July 2012 3:39:55 AM
Subject: Bitcoinica is done
THANK YOU FOR YOU SOURCE CODE.
BITCONICA IS NOW OFFICALY DONE!
LASTPAS PASWORD: c02e1a27-5524-449f-ba65-aff9581ddedc
I also appreciate the fact that although it appears his keyboard is stuck in ALLCAPS mode, he is able to write a proper subject header before switching to allcaps [Subject: Bitcoinica is done].
Also in one message he understands the difference between YOU and YOUR [e.g. YOUR EXCHANGE] but in another doesn't [e.g. YOU SOURCE CODE]
Cool story bro.