Cybersecurity Blog

Scammers using voicemail to steal WhatsApp accounts – 10/17/18

 

 

Armed with nothing more than your phone number, criminals can steal your WhatsApp account.  How? By registering your phone number on their phone. Here is how it works.

First the attacker makes a request to have your phone number registered to the WhatsApp application on their phone. When WhatsApp receives the request, they text a verification code to your phone.  The scammers make their request in the middle of the night or when you are on a flight so you don’t see the verification code. With the text not answered, WhatsApp offers to read out the code and leave it in a voicemail.

If your cell phone carrier has a default password set up for voicemail and you have not changed it, the criminal simply enters the default password and boom…they can hear the verification code. Once they enter that code, the account gets transferred over to their phone. The attacker then sets up two step verification on the account and you have no way of getting it back.

The moral of the story, set strong and unique password for your voicemail.  While you are at it, do that with all your accounts.

 

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