How to secure your smart home: 12 steps that actually matter

Knowing how to secure your smart home matters more with every device you add. Each connected camera, doorbell, speaker, thermostat or plug is a small computer on your network, and a poorly protected one can expose your privacy or give an attacker a way in.

The good news is that most smart home attacks are not sophisticated. They exploit weak passwords, outdated software and careless default settings. The steps below close those gaps without requiring any technical background.

Yes. Smart devices have been hijacked to join botnets, spy through cameras and serve as stepping stones into home networks. Most incidents come from reused passwords leaked in other breaches, default logins that were never changed, or devices that stopped receiving security updates. Your smart home is only as strong as its weakest link, which is why the router and your accounts come first.

Step 1: Lock down your Wi-Fi router

The router is the front door to every connected device. If an attacker controls it, they can see and redirect your traffic.

• Change the router's admin password from the default
• Use WPA3 encryption, or WPA2 with AES if some devices do not support WPA3
• Choose a long Wi-Fi password of at least 12 to 16 characters
• Turn off WPS, which can be easier to attack
• Disable remote administration unless you really need it
• Turn on automatic firmware updates

Step 2: Put smart devices on a separate network

Many routers let you create a guest network or a dedicated network for smart devices. Placing cameras, plugs, bulbs and TVs there keeps them apart from the laptops and phones that hold your banking and work data.

If a cheap gadget is compromised, network separation makes it much harder for an attacker to reach your more valuable devices. Some advanced routers offer separate virtual networks with finer rules, but a simple guest network is already a clear improvement.

Most smart home attacks are not clever; they walk through default passwords and forgotten updates.

Step 3: Use strong, unique passwords and two-factor authentication

Most smart devices are controlled through a cloud account. If that account is taken over, the attacker controls your devices from anywhere. Give every smart home account its own long password, stored in a password manager, and turn on two-factor authentication wherever it is offered.

Also change any default passwords on the devices themselves, for example on network cameras or video recorders that have a local web interface.

Step 4: Keep firmware and apps updated

Security updates fix vulnerabilities that attackers actively look for. Enable automatic updates in each device's companion app and check occasionally that they are really installing.

Before buying, check how long the manufacturer promises security updates. A device that no longer receives patches should be replaced or at least moved to an isolated network. The EU's Cyber Resilience Act will require manufacturers of connected products to provide security updates for a defined support period, which should make this information easier to find.

Step 5: Secure cameras and video doorbells

Cameras are the most privacy-sensitive devices in a smart home, so give them extra attention. Where available, enable end-to-end encryption for video. Review who has shared access, and remove former housemates, guests or contractors.

Think about placement too. Avoid pointing indoor cameras at bedrooms and bathrooms, and use privacy modes or physical shutters when you are at home. Outdoor cameras should not film neighbours' property or public spaces more than necessary, since data protection rules in many countries restrict this.

Step 6: Review privacy settings on smart speakers and TVs

Voice assistants listen for a wake word and send recordings to the cloud after they hear it. Go through the privacy settings to limit how long recordings are kept, delete old ones and opt out of human review where possible. Use the physical microphone mute button during private conversations.

Smart TVs often collect viewing data for advertising. Look for settings related to content recognition, viewing information or ad personalisation, and switch off what you do not want.

Step 7: Buy smart devices with security in mind

The safest device is one from a manufacturer that takes security seriously. Very cheap no-name gadgets often skip updates entirely.

• Clear promise of security update duration
• Support for two-factor authentication
• Local control options that work without the cloud
• Support for Matter, the industry standard designed for secure local control across brands
• A privacy policy that explains what data is collected and where it is stored
• A way to report security vulnerabilities

More smart home security habits

A few extra habits round out your protection and take only minutes.

• Step 8: Remove devices and apps you no longer use
• Step 9: Turn off features you do not need, such as remote access or UPnP
• Step 10: Check the list of connected devices on your router for unknown entries
• Step 11: Factory reset devices before selling or recycling them
• Step 12: Keep a mechanical backup for smart locks, such as a physical key

Frequently asked questions

Securing your smart home comes down to a handful of habits: a well-configured router, a separate network for gadgets, strong accounts with two-factor authentication, regular updates and careful buying. Spend an hour on these steps and you keep the convenience of connected devices without handing over your privacy.

How we research: Guides are written from established sources and checked for accuracy. They are general information, not professional advice.