Smart speakers, cameras, doorbells, thermostats, and light bulbs make life more convenient — but every connected device is also a potential doorway into your home network. Hackers do not need to break into your house when they can break into a poorly secured camera or a smart plug with a default password. The good news is that securing your smart home is mostly a matter of simple habits, not technical expertise. Here are 10 practical steps that make your devices dramatically harder to attack.
1. Change Every Default Password
This is the single most important step, and it is the one most people skip. Many smart devices ship with a default username and password like “admin/admin” — and those defaults are published online for anyone to find. Attackers scan the internet for devices still using them. Set a unique, strong password for every device’s app account and admin panel. A password manager makes this painless: generate a long random password for each device and let the manager remember it.
2. Keep Firmware Updated
Manufacturers regularly patch security holes in device firmware. A camera that has not been updated in two years may have known vulnerabilities that are trivially exploitable. Turn on automatic updates wherever the option exists, and check manually every few months for devices that do not update themselves. If a manufacturer has stopped supporting a device entirely — no updates for over a year — consider replacing it, especially for cameras and doorbells that watch your home.
3. Put Smart Devices on a Separate Network
Your router can probably create a guest network. Use it — or better, a dedicated IoT network — for your smart devices, keeping them isolated from your computers, phones, and work files. That way, even if a hacker compromises a smart bulb, they cannot easily reach your laptop or your stored documents. This is sometimes called network segmentation, and it is one of the most effective defences available. Most modern routers support it in a few clicks under the guest network or VLAN settings.
4. Turn Off Features You Do Not Use
Every enabled feature is a potential attack surface. If your camera supports remote access you never use, disable it. If your smart speaker’s “drop in” or intercom feature is not something you need, switch it off. Disable Universal Plug and Play (UPnP) on your router unless a specific device genuinely requires it — UPnP lets devices open ports to the internet automatically, which attackers love. Review each device’s settings once after setup and strip out anything you do not actually use.
5. Enable Two-Factor Authentication
Your smart home accounts — the apps that control your cameras, locks, and thermostats — should all have two-factor authentication (2FA) enabled. That way, even if someone steals your password, they still cannot log in without the second factor from your phone. Use an authenticator app rather than SMS codes where possible, since SMS codes can be intercepted. This one setting blocks the vast majority of account-takeover attempts.
6. Be Careful with Smart Cameras
Cameras deserve extra caution because a compromise exposes your private life, not just your data. Never point indoor cameras at bedrooms or other sensitive areas if you can avoid it. Use the physical privacy shutter or lens cover when you are home, if your camera has one. Buy cameras from reputable brands with a track record of security updates, and avoid no-name cameras that require you to route video through unknown cloud servers. If a camera’s app asks for permissions it clearly does not need, that is a red flag.
7. Secure Your Wi-Fi Properly
Your smart home is only as secure as your Wi-Fi. Use WPA3 encryption if your router supports it, or WPA2-AES at minimum — never the outdated WEP or open networks. Set a strong, unique Wi-Fi password, and change it if you have ever shared it widely (for example, with guests or tradespeople). Also change your router’s own admin password from the default. An attacker who controls your router controls everything connected to it.
8. Review App Permissions and Third-Party Integrations
Smart home apps often ask for more access than they need — your location, contacts, or microphone. Review these permissions in your phone’s settings and revoke anything unnecessary. The same goes for third-party integrations: every “works with” connection you add (voice assistants, automation services, IFTTT-style applets) is another party with access to your devices. Periodically audit which services are linked to your smart home accounts and disconnect the ones you no longer use.
9. Watch for Signs of Compromise
A hacked device often gives itself away: a camera that moves or lights up on its own, a smart speaker that speaks unexpectedly, devices that slow down or use unusual amounts of data, or settings that change without you touching them. If you notice any of these, disconnect the device from the network immediately, change its password, update its firmware, and factory-reset it before reconnecting. If a device’s behaviour cannot be explained, treat it as compromised until proven otherwise.
10. Think Before You Buy
The cheapest smart device is often the least secure. Before buying, check whether the manufacturer publishes security updates, has a vulnerability disclosure policy, and supports the device for a reasonable lifespan. Brands that take security seriously say so publicly. A slightly more expensive device from a reputable brand, kept updated and properly configured, is far safer than a bargain device abandoned by its maker six months after launch.
Conclusion
Protecting your smart home devices from hackers does not require expert skills — it requires consistency. Change default passwords, keep firmware updated, isolate devices on their own network, turn off unused features, and enable two-factor authentication on every account. Add careful camera placement, a properly secured router, and regular permission audits, and you will have closed nearly every door an attacker would try. Your smart home should work for you, not for strangers on the internet — and these 10 steps make sure it stays that way.