the current message
The system is not optimal, and WhatsApp is working on improving it so that victims of this type of attack have better expectations of keeping their account. To begin with, we have already seen that the warning window when someone uses our phone number would be somewhat less passive, asking us if we allow to move the account to a new phone. Now we have some more information about it.
If indeed we choose we allow to move the account to a new phone, we will find a window that reminds us of the importance of making a backup, to have all our messages on the new phone (if we use the same Google account). For security, we must confirm our intentions by pressing Transfer and deletewhich will erase all our messages from the old mobile.
On the contrary, if we do not allow the transfer We will be warned that someone tried to register our phone number and we are reminded of the importance of never sharing the codes that WhatsApp sends by SMS. We then have the option to add more security to our account, which invites us to configure two-step verification. This way, even if they have the verification code, they won’t be able to use your account.
this novelty not yet available to users although it’s been in development for a few months now and seems to be almost ready, so it’s only a matter of time before someone in Meta hits the button from the server side.