The Hatter is like a ghost in the machine. He is an elite cyber specialist. We have plenty of world-class pros on our team but no one really understands how the hatter does what he does.
Personally, I think he has some kind of supernatural power from God. What unbelievers would call magic. There is no rational explanation I am aware of, so you tell me.
The Mad Hatter is the head of the PIN section. Do not sip his tea unless you are prepared for life-altering things to be revealed.