Smart home devices add convenience, but they also expand the attack surface for your home network. With a few practical steps you can enjoy smart lights, cameras, and thermostats while keeping privacy and security front of mind.

Know what you own
Start with an inventory. List every connected device: smart TVs, speakers, security cameras, plugs, bulbs, and appliances. Note the manufacturer, model, and whether the device relies on cloud services or supports local control. Devices that process data locally or support interoperable standards tend to offer better privacy options.

Lock down the network
Network-level controls are your first line of defense. Put IoT devices on a separate guest or VLAN network so they can’t directly access computers or phones.

Use a modern router that supports automatic security updates, WPA3 encryption if available, and device-level firewall rules. Change the default admin password on the router and the devices themselves, and disable remote administration unless you really need it.

Passwords, accounts, and two-factor authentication
Use unique, strong passwords for every device and account. A password manager makes this manageable. Where available, enable two-factor authentication for the manufacturer account or companion app to prevent unauthorized access even if credentials leak.

Keep firmware current
Manufacturers often patch vulnerabilities through firmware updates. Enable automatic updates where possible and check devices periodically for patches. If a vendor has a poor update track record, consider replacing the device with a better-supported alternative.

Prioritize local control and transparency
Devices that offer local control—meaning they work without sending data to external servers—reduce privacy risk. Look for products that support open standards and ecosystems, such as Matter, or that integrate cleanly with local smart home platforms. Community-driven platforms can extend functionality while keeping sensitive data on local hardware.

Harden camera and voice assistant settings
Cameras and microphones are the most sensitive devices in a home.

Limit recording to necessary times, configure activity zones to reduce false alerts, and disable cloud storage if you prefer local recording to encrypted network-attached storage. For voice assistants, turn off features like remote voice purchasing or drop-in calling unless required, and delete voice recordings periodically if the vendor allows it.

Be mindful of data sharing and permissions
Review privacy policies and in-app permissions before adding devices.

Understand what data gets collected, where it’s stored, and whether it’s shared with third parties. Opt out of analytics or marketing telemetry when possible, and favor brands that publish clear data-handling practices.

Secure physical access and lifecycle management
Place devices in locations that limit unauthorized physical access.

Before selling, recycling, or gifting a device, perform a full factory reset and remove it from associated accounts. Consider keeping a device off-network if you no longer use it but want to keep it for parts.

Add layered protection
Consider DNS filtering to block malicious domains, and use network monitoring to detect unusual outbound traffic from devices. For advanced setups, a dedicated IoT firewall or micro-segmentation can add extra protection without breaking functionality.

Small steps make a big difference. Regularly audit devices, apply updates, and favor local control and reputable vendors. These practices help maintain convenience without sacrificing privacy or security.