Your smart home devices are a major privacy risk – here’s how to secure them

That brand-new smart fridge might be keeping your groceries cool, but it could also be leaving your personal data out in the cold.

Today’s smart devices, ranging from security cameras and thermostats to seemingly harmless smart lightbulbs, often ship with notoriously weak security protocols. Worse still, they frequently "phone home," sending a constant stream of your usage data back to manufacturer servers.

Unlike your laptop or smartphone, you cannot simply download and install security software on a smart plug. These Internet of Things (IoT) devices are essentially closed boxes, leaving consumers with very few options for on-device protection.

If you want to secure these gadgets, the most effective solution is to secure the network they connect to. By setting up hardware-level encryption directly on your Wi-Fi router, you can automatically protect all connected IoT devices simultaneously.

To that end, finding the best VPN with router support is your first port of call.

However, it is vital to understand the limitations of this approach. A Virtual Private Network (VPN) restricts data protection to transit only. It will securely tunnel your data, but it cannot fix underlying firmware vulnerabilities or stop manufacturer-side data leaks once the information reaches their proprietary cloud servers.

The hidden security risks of smart devices

Many budget-friendly IoT devices rely on unencrypted channels to communicate. This leaves your network traffic vulnerable to local eavesdropping, meaning anyone nearby with the right tools could potentially intercept your data.

Even when encrypted, the continuous cloud connections required by smart homes allow Internet Service Providers (ISPs) and third-party trackers to map your daily routines. By simply monitoring spikes in your network activity, an observer can easily deduce when you wake up, when you leave for work, and when you go to sleep.

While a VPN will effectively hide this traffic from your ISP, it cannot prevent manufacturers from collecting and storing data once it reaches their servers.

To truly enhance your privacy, you need to combine a network-level VPN with strict in-app privacy settings and manually opt out of data-sharing agreements in your companion apps.

How a router VPN can help

By installing a VPN directly on your router, you encrypt all outgoing traffic from your home. This process successfully masks the specific signatures of your smart devices, making it incredibly difficult for outside observers to identify what hardware you are running.

For added security, combine a VPN with a separate guest Wi-Fi network. By relegating all your smart gadgets to a secondary network, you prevent hackers from "jumping" from a compromised smart plug to your primary laptop or smartphone.

Some of the best VPN providers like NordVPN and ExpressVPN now feature military-grade AES-256 encryption and Post-Quantum Encryption (PQE) protection as standard, ensuring your network is future-proofed against emerging threats.

If you are intimidated by network configuration, ExpressVPN’s Aircove router simplifies setup for beginners, offering built-in VPN protection straight out of the box. Alternatively, tech-savvy users can manually flash open-source firmware like DD-WRT or OpenWrt onto compatible routers as a highly cost-effective DIY alternative.

Just be aware of the trade-offs. Router-level encryption demands processing power, which can reduce your overall internet speeds and occasionally introduce technical troubleshooting hurdles when devices refuse to connect.

Take back control of your data

Securing your smart home is about more than just blocking malicious hackers; it is about reclaiming ownership of your personal data.

VPNs remain a powerful tool in your privacy arsenal, but they work best when deployed alongside regular hardware firmware updates and strict network isolation.

Ready to upgrade your home network? Check out our comprehensive guide to the best VPN routers and our ultimate best VPN service round-up for 2026.