So, while creating a username for WhatsApp you can add a PIN lock to it. WhatsApp aims to create an added layer of security to prevent WhatsApp based scams and other cyber fraud.

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PINs are also often used to lock phones, safes, and lockers. If your PIN is common enough for someone to guess, these things can also be at risk of theft, as well.

What’s happening is that the hacker is actually requesting for the 6-figure pin to your account and the moment you send it to them you’re locked out of your own WhatsApp account.

But if you prefer the ease of using a PIN, switching to a six-digit PIN is a smart move. Here's how to set it up on an Android phone. Open the Settings app on your phone. Go to Security > Screen Lock.

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