He/she/they are going to have a large man hunt since bitfinex said they will be releasing details of hack. Depends on who they are but there is a chance they dont feel safe. Hackers have done deals before, but yeah if its to do with a bank its diffferent. It depends who who they are if they care.
If i want to make a hack this big (and by the way i never did or will, because i am to dumb and afraid) i better make sure, that i just do it if i can do it in a way that i will fell safe afterwards.
also i better have a plan b, plan c and plan d. just in case something goes wrong.