Sort:  

First time hearing of this one

Please be careful. Once you call the code for them, they will lock you out of the account. It will take 1 week to recover your whatsapp. By that time, they have done the damage.

Thanks for this cautious warning, I'll be on the lookout

Please be careful. They are really becoming more prominent.

sure? Please tell more

Yes, they try to add 2FA security. So they need that confirmation code from whatsapp. Once you call it for them, your whatsapp is their own for 1 week