How to Protect Your Home Wi-Fi

Your router is the front door to every phone, computer, TV and smart gadget in the house. A few minutes of setup keeps strangers off your network and your devices safer.

1. Change the router’s admin password

Your router has two passwords: the Wi-Fi password you give to guests, and the admin password that controls the router’s settings. Many routers still use the factory admin password printed on a sticker or found online. Log in to the router (the address and app are usually on the sticker or in the box) and change it to something long and unique.

2. Use strong Wi-Fi security

In the Wi-Fi settings, choose WPA3 if all your devices support it, or WPA2/WPA3 mixed mode, or at least WPA2-Personal (AES). Avoid anything labeled WEP, plain “WPA,” or “TKIP” — those are old and easy to break.

3. Make the Wi-Fi password long

Use at least 12 characters. A short phrase of a few random words is easy to type on a TV remote and hard to guess. If you’ve handed your password out to a lot of people over the years, it’s fine to change it — just reconnect your devices afterward.

4. Update the router

Routers get security updates just like computers. Many newer ones update themselves; older ones may need you to click “Check for updates” in the settings or app. If your router is so old that the manufacturer no longer releases updates for it, it’s time for a new one.

If you rent your router from your internet company, they usually handle updates. You should still set your own Wi-Fi password.

5. Set up a guest network

Most routers can run a separate guest network. Give that one to visitors, and consider putting smart plugs, cameras and other gadgets on it too. That way, if one cheap device has a security problem, it isn’t sitting on the same network as your computer with your banking and photos.

6. Turn off features you don’t use

• WPS (the push-button or PIN pairing feature) — turn it off if you don’t use it.
• Remote management from outside your home — leave it off unless you need it.

7. Give it a plain name

Your network name shouldn’t include your last name or address. Something neutral is fine.

8. Check who’s connected

Your router’s app or settings page shows a list of connected devices. If you see something you don’t recognize, change the Wi-Fi password and reconnect only your own devices.

9. Look after your smart home devices

Keep the apps for cameras, doorbells and smart speakers updated, use a unique password for each account, and turn on two-step login wherever it’s offered.

Dead spots are a different problem

If the signal drops in the back bedroom or the shop, that’s a coverage issue, not a security one. A mesh Wi-Fi system with a few small units around the house usually fixes it — and it’s a good time to set up all of the security steps above at the same time.