Is nothing safe? Fraudsters are locking people out of their accounts. They do this by getting access to an account that has you as a contact. They then send you a message that seems to have been sent by your friend. Whist chatting with you, the fraudster tries to register a WhatsApp with your phone number. This makes WhatsApp send a six-digit code to your phone. Now the fraudster tries to convince you that they (posing as your friend) sent the code which they need to sign into their account. If you do send the code to them, it is you who will be locked out. And the cycle repeats with your contacts…..
You may want to switch on two-step verification in the WhatsApp settings to further protect your account.