Australian Bank Account Numbers; changed the way the number is masked

Previously Australian Bank Account Numbers were masked by replacing all but the last 4 digits with "*".

This means that if someone looks at the masked number they can see how long the Account Number is. In addition, if the Bank Account Number is say 5 digits, only one digit is masked. For example, 12345 is masked as "*2345".

Masking now always shows 5 "*" and then the last four digits. For example, 12345 is now masked as "*****2345".