11 months ago, we put Guaranty Trust Bank’s 737 mobile banking service under the spotlight and showed how it had a gaping security hole in it. The security flaw in how the GTBank 737 service worked till now was that the only authentication needed when you dial *737# and proceed to carry out a transaction were the last 4 digits of your ATM card as PIN/password. This meant that anyone who steals your phone and wallet (where your bank card is likely to be) can use the service.
The More Secure GTBank 737 Service
Well, GTBank has finally plugged the hole. The service now requires a 4-digit PIN to be able to complete transactions on the platform. That is certainly a more secure approach to the service than the previous use of your card’s last 4 digits. It is a surprise that it took 11 months, but better late than never.
Create Your PIN
According to the instructions on GTBank’s website, here is how to create a PIN for use on the 737 platform:
- Dial *737*5#
- Input the last 6 digits of your debit card
- Create your 4-digit PIN
You will require your 4-digit PIN to complete your transactions, so do not forget it.