It can be quite a shock to discover one of your smart-home devices has been compromised. Perhaps it's acting strangely, or maybe you've received an alert. Whatever the prompt, it’s important to act quickly to get your device and your home’s security back on track.
Important
When a smart device is compromised, it might be used to spy on you, access other devices, or even join a "botnet" to attack other networks. Every minute counts!
Confirming the Compromise
First things first, let’s confirm if your device has indeed been compromised. Sometimes, a glitch can mimic the signs of a hack. Look for unusual activity or settings changes that you didn't make.
- Unexpected lights turning on or off.
- Cameras or microphones activating without your command.
- Unfamiliar settings changes in the device's app.
- Devices trying to connect to unknown networks.
- Error messages or performance issues you haven't seen before.
Isolating the Device
If you suspect a compromise, the next step is to isolate the device immediately. This prevents the attacker from potentially accessing other devices on your home network. Think of it like quarantining a patient to stop a virus from spreading.
- Unplug the smart device from power.
- If it's battery-powered, remove the batteries.
- Temporarily disable Wi-Fi on the device via its app or direct controls if possible (though unplugging is often quicker and safer).
Reclaiming Your Account
Even if the device is unplugged, an attacker might still have access to your account related to that device. This means they could potentially control other devices linked to the same account or access your personal information. You need to secure your account immediately.
- Change your account password to a strong, unique one.
- Enable two-factor authentication (2FA) if you haven't already. This usually involves a code sent to your phone or email.
- Review your account's 'authorised devices' or 'session history' for any unfamiliar logins.
- Remove any suspicious third-party app connections or integrations.
Factory Resetting the Device
A factory reset will wipe all data and settings from the device, returning it to its original, 'out-of-the-box' state. This is crucial for removing any malicious software or configurations an attacker might have installed.
- Consult your device's manual or the manufacturer's website for specific factory reset instructions.
- Typical methods include holding a small reset button for several seconds, or using an option within the device's app.
- Be aware that you'll need to set up the device again from scratch after a reset.
Re-Securing and Monitoring
Once the device is reset, you can begin the process of setting it up again, but this time with stronger security in mind. This is also a good opportunity to review the security of your entire smart home.
- When setting up, choose a strong, unique password for the device if it has its own login.
- Connect the device to a separate 'guest' Wi-Fi network if your router supports it. This isolates it from your main network.
- Regularly check for and install firmware updates, as these often include security patches.
- Monitor the device's activity closely for any further unusual behaviour.
Key takeaway
Dealing with a compromised smart-home device can be unsettling, but by following these steps, you can regain control and bolster your home’s digital defences. Remember, vigilance and proactive security practices are your best allies in the smart home world. Stay safe online!
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JD
Written by
Jordan DicksonFounder, CyberSecurityGuides
Founder of CyberSecurityGuides, writing practical, jargon-free guides that help everyday people recover from and protect against online attacks.
Reviewed by CSG Security Engineers