How to find and remove unknown devices from your Wi-Fi network

by Burton Kelso, The Tech Expert

I know many of you are losing sleep worrying if some cyber crook is snooping around your Wi-Fi network, looking for information that will help them gain access to your username and passwords that will allow them to hack into your social media accounts, email and financial websites. Fear not, in our digital world it's nearly impossible for hackers to gain access to your home or business network. 

Seriously. 99% of cybercrime requires user interaction, which means as long as you're not clicking on links in emails and text messages as well as not using weak passwords for your Wi-Fi router, you're safe.  However, there's nothing wrong with checking your wireless router now and then to see if any unknown devices are connected. Follow these tips to keep the bad guys from connecting to your wifi and avoid being the free neighborhood hotspot.

Download and use your router app. Every router manufactured in the past five years has an app that allows you to change your settings as well as see how many devices are connected to your Wi-Fi network. Your router app can remove unknown devices giving you peace of mind when you see a strange device show up on your network. You can also log directly from your router from your computer or smartphone to see what devices are connected.   You would need your router's IP (Internet Protocol) address. If you're not familiar on how to achieve this, you would be better off using the app.   Additionally, if you're using a router from your Internet Service Provider (ISP), you should be able to call them and they can give you an idea of what devices are connected.

Use an IP Scanner. An IP scanner is a tool you can use to find out what devices are connected to your Wi-Fi network. One of my favorites is Angry IP and it works on Windows and Mac devices. If you prefer to use your smartphone, try Fing.  Both apps will scan your wireless (and wired) network to let you see what devices are connected.


Other Tips to follow:

Set up a Guest Network. If you have family members and neighborhood kids who insist on using wifi when you visit or have an office and you want your customers to be able to use Wi-Fi,  setup a guest network access with your router.  This will allow those guest to connect to the Internet without risking them access to your main network.  Guest network access is great because you can turn off the guest network which prevents anyone from connecting whenever they want.

Hide your Service Set Identifier (SSID). An SSID is the identifier for your wireless network.  Its purpose is to let your devices know which network to connect to to join a home or business network. Under normal circumstances, your SSID is visible to help you easily connect to your wireless network.  To keep your wifi network secure, you should go into your router settings and make it invisible. When it's invisible your home and business neighbors are well as criminals can't see your wifi name to connect. Only you will know and only the people you share with will know.

Going Through a Breakup, remove your partner's access.  If you're breaking up with someone, make sure you remove their devices from your wireless network. There's no reason someone you're no longer involved with should have access to your wifi. Same thing with employees you've let go.  When you continue to allow them access, you increase the chances they can log into your network and conduct some malicious access.

Change your Wi-Fi password from time to time. You know the drill, treat passwords like underwear. Change them frequently.

Replace your router every five years. Internet technology changes frequently which means if you want those speeds your internet provider promised you, you need to switch out that router.  When you change out your router, you also remove access to anyone who connected to your old one.

Hopefully, this will help you keep an eye out for anyone who manages to get access to your Wi-Fi.  If you have any questions, please reach out. I'm always available.


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