This user cheated on our site. We can not enclose any technical details, since other people would be able to cheat as well on this.
I think everybody already suspected this, since the user made sure he turned 800$ into 5500$.
We faced damage from this cheating behaviour from customers, to the amount from user Brassnuts has been confiscated.
I rarely suggest this since it would take some of their time and I am not sure if they would agree, but if you are afraid of showing some confidential/technical details to the public, you can try and ask some reputable members here in the forum to review the evidence you have that pins brassnuts actually cheated your website.