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Freedom251 › Blog › home network

Can You Tell if Someone Is Stealing Your Wi-Fi? How to Check and Secure Your Network

By Freedom251 Team · · 4 min read

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Yes—you can check which devices are using your Wi-Fi in your router’s connected-device list or your internet provider’s app. But an unfamiliar name is not proof that someone is stealing your connection: household devices can appear under generic names, and some devices use identifiers that differ from their hardware addresses. Verify the entry first; if it remains unexplained, secure the router and Wi-Fi network.

Where to check which devices are connected

Open your router’s web interface or your internet provider’s app and look for a section called connected devices, wireless clients, or DHCP clients. The Federal Trade Commission (FTC) recommends checking these lists to see what is connected: Securing Your Internet-Connected Devices at Home.

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Router menus vary by manufacturer and model. If you cannot find the list, check the router’s manual or the provider’s help page for your exact model. Make a list of the devices you expect to see, then compare it with the router’s entries.

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How to verify an unfamiliar device

Check more than the device name before deciding a connection is unauthorized. A router may show a manufacturer, model, or generic hostname rather than the name you use for that device. Your inventory should include phones, computers, TVs, game consoles, printers, cameras, smart speakers, appliances, and devices belonging to visitors who have joined your network.

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  1. Check the device list against your household inventory. Look for devices that are powered off or used infrequently, as well as guest devices that may still be connected.
  2. Compare device details. If the router displays a manufacturer, model, or network address, compare it with the device’s Wi-Fi settings or companion app where possible.
  3. Account for randomized addresses. Supported Apple devices can use a unique, randomized Wi-Fi MAC address. That address may differ from the device’s hardware address, so a mismatch alone does not establish that the device is foreign. Apple explains this feature in its private Wi-Fi address guidance.
  4. Investigate entries you still cannot identify. If an entry remains unexplained after checking household and guest devices, treat it as a reason to secure the network—not as conclusive proof of theft.

How to secure the network if a device remains unexplained

  1. Change the router administrator password. This password controls router settings and is separate from the Wi-Fi password. Use a unique password you do not reuse elsewhere. The FTC notes that someone who gains administrator access could change router settings, including the Wi-Fi password. See its home Wi-Fi security guidance.
  2. Set a new Wi-Fi password. Choose a unique password that is not used for another account. You will need to reconnect your household devices using the new password.
  3. Choose a secure Wi-Fi encryption mode. Use WPA3 Personal if your router and devices support it; otherwise, use WPA2 Personal. The FTC identifies WPA3 as the newer and best available option in its guidance and says WPA2 also protects the network. Avoid outdated WPA or WEP modes. See the FTC’s recommendations.
  4. Install available router updates. Check the router interface, provider app, or manufacturer’s instructions for software or firmware updates. If the manufacturer no longer supports the router with security updates, the FBI recommends replacing it with a supported model where possible. See the FBI’s router-malware advisory.
  5. Review administrator settings. Look for configuration changes you do not recognize. The FBI lists unexpected setting changes, connectivity problems, and overheating as signs associated with router malware; none of these signs alone proves that a router is compromised. Its advisory also recommends disabling remote administration when it is not needed, applying necessary updates, changing passwords, and rebooting.
  6. Ask for model-specific help if the issue persists. Contact your internet provider or router manufacturer if an unexplained device or unexpected configuration remains after you secure the network.

When to keep or replace the router

An unfamiliar device entry by itself is not a reason to buy a new router. First check whether your current router receives security updates and supports WPA3 Personal or at least WPA2 Personal. If it does not offer either secure mode after available updates, or it is no longer supported, consider replacing it. The FTC advises considering a new router if updates do not make WPA2 or WPA3 available; the FBI recommends replacing routers that have reached end of life where possible. See the FTC guidance and the FBI advisory.

For a replacement, check that the router supports WPA3 or WPA2, still receives security updates, and works with the devices in your household. The exact menu names, encryption options, update availability, and support status depend on the router model, so confirm them with its manufacturer or your internet provider.

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Keep visitors’ devices separate

If your router supports a guest network, use it for visitors rather than giving them access to your main household network. The FTC’s home-router guidance includes advice on setting up a guest network.

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