1. Two-step verification (two-step verification)Two-step verification is an additional layer of security for the account. You will be asked to make a pin consisting of 6 digit numbers and WhatsApp will ask for it when doing an account reset or verification.
2. Update the privacy setting profileYou can control how many people can see Last Seen, your profile photo and status on WhatsApp. To change this setting, you can enter Settings - Privacy.
3. Set the group chat privacy settingsYou can see who can add you to a WhatsApp group. To do this, enter Settings on WhatsApp - Account Privacy Groups and choose one of these three options: Everyone, My Contacts, or My Contacts Except.
My Contacts means that only people in your contacts can add to the WhatsApp group. My Contacts Except, means additional controls for the exclusion of people who are already in your contacts.