The short answer: WhatsApp isn't a content app — it's a messaging app — so the risk isn't an algorithm, it's people. On the default settings, anyone who has your child's number can message them and drop them into group chats. Change a handful of privacy settings and it becomes a much smaller, more sensible space. Unlike Instagram or Snapchat, it usually falls outside the new under-16 social-media laws (such as Australia's), so the decision is more often genuinely yours.
What WhatsApp is
WhatsApp is a private messaging and calling app. There's no public feed and no recommendation engine, which makes it calmer than most social apps. But it's also encrypted and built around your phone number, so the two things to manage are who can reach your child and what they do when someone they don't know gets through.
Where it can go wrong
The honest risks are: unknown numbers messaging directly (scammers, and occasionally worse); being added to group chats full of strangers, where forwarded images and links arrive with no warning and no filter; and sextortion, where someone builds quick trust and then pressures for a photo. Because messages are private, you won't see any of this from the outside — which is exactly why the settings and the conversation both matter.
If your child is under 13, there's now a parent-managed account option (rolled out March 2026) where you set up and control the account — who can message them and which groups they can join — and it's limited to messaging and calling only. For a young child who genuinely needs to reach family, that's a far better fit than a standard account.
The conversation that matters most
Settings stop strangers reaching in; the conversation decides what happens when one does. We keep ours simple: if a number you don't know messages you, you don't reply — you show me. No one nice ever needs a photo from you. And if anything ever feels off or scary, you're never in trouble for telling me.
The bottom line: WhatsApp is workable for older kids once you've locked the privacy settings down so only known contacts can reach them. The app won't filter anything for you — your settings and your conversations are the safety net.
Lock it down — start tonight
Mum's quick wins for WhatsApp. Do step 1 tonight; the rest are in the members' guide.
- 1Set 'Groups' to 'My Contacts' only in Privacy so strangers can't add them
The rest of the WhatsApp lockdown
5 more steps — every toggle, screen by screen.
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See the signsSources: WhatsApp — Terms of Service; WhatsApp Help — Verifying your age; eSafety Commissioner — The eSafety Guide; FBI — Financially motivated sextortion. Settings current as of June 2026.

