Online banking: verify the payee every time
Bank account details can change. Do not send funds to an account delivered only by private message without matching it to the verified operator cashier.
Values to record
Minimum and maximum amount, possible fee, provider, processing estimate, account-ownership requirement, refund route and transaction reference.
Security boundary
Never share online-banking credentials, card PIN, wallet PIN or OTP. Authorise only the exact payee and amount you reviewed.