One way that can be done is by deleting the WhatsApp application on the smartphone and reinstalling it. After that, log in again with the registered number. If the hacker has not changed the mobile number on the WhatsApp account, this step can be successful.

However, if someone who is not authorized to access your WhatsApp account has enabled the two-step verification feature and you do not know the code, then you will be required to wait for 7 days before being able to access your WhatsApp account. After the 7-day waiting period, you will be able to access your WhatsApp account without needing to enter the two-step verification code when logging in.

The way to do it is by sending an email to support@whatsapp.com. In the email, make sure you write the subject "Akun WhatsApp Saya telah dibajak" or "My WhatsApp account got hacked" if using English. Don't forget to include the phone number that was hacked so that WhatsApp can process it properly.

First, never share your 6-digit WhatsApp verification code with anyone. Second, enable two-step verification to provide an additional layer of security to your WhatsApp account.

Third, be careful of people who claim to be from the bank and ask for money. Make sure the official WhatsApp account belonging to the bank has been verified with a green checkmark. Lastly, if you access your WhatsApp account through someone else's PC or laptop, make sure to log out after using it.