The management of Guaranty Trust Bank advises their customers not to update their account information via any link.
They also advised customers to dial *737*911# immediately if they notice any suspicious activity on their accounts.
They advised customers not to share the following:
1. Internet Banking login details.
2. Gt World/GT Mobile Passwords.
3. ATM PIN
4. CVV
5. ATM Card Number.
6. Codes from your token device.
Source: Guaranty Trust Bank Limited.