Obviously, the banks won't lose out...

...but the bank customers will. If the banks have to foot the bill for the fraudulent transactions, those costs will be passed on the the customers by way of increased interest and general bank charges. The bank bosses will still get their millions in bonuses. TeaMp0isoN and Anonymous need to step back and look at these things using a little more common sense. Also, as already stated, the taxpayer will suffer, so if you rob a bank, you are robbing the general public!