According to the bank, “Scammers impersonate you and trick your mobile phone’s carrier into activating a SIM card, which gives them control over your phone number. It means scammers could potentially enter your username and password when logging onto your online banking platform and then receive the SMS verification code to access your account.
“Protect yourself against SIM swaps, don’t share personal information that fraudsters could use to impersonate you (such as your mother’s maiden name or birthplace) on social media. Never reveal your logins and passwords for your mobile phone, online bank, or credit card accounts to anyone. Please always report any suspicious activity”.