The bank with the highest Hasher version that I have found so far is
the Ultimate Bank, with a Hasher of 8.0
I have found multiple other banks with lower versions, but that is the highest I have seen. I know that the higher the bank's Hasher version, the higher Cracker you need to hack an account on that bank. I would rather my money not be stolen, so which bank has the highest Hasher version?