Online hackers can easily gain unauthorized access to your internet router, which poses a huge security risk to you, and all they need to access your WiFi network is your network credentials, which they can steal in many ways without any difficulty.

If you suspect that someone is stealing your WiFi, there are several ways you can find out.

Signs of theft

Oftentimes, more people using an internet router can cause performance issues, meaning sudden slowdowns in internet speeds, and making streaming or downloading data take longer than usual.

In addition, you may find that you are constantly losing your connection as a result of the device turning off frequently.

This is another consequence of having too many people logged into your internet router at once, although this can be caused by other factors as well.

How do you check for intruders?

To scan your network for intruders on the Internet, your best bet is probably the WiFi Detective app.

There are also plenty of apps available for iOS and Android devices, but one of the trusted options is WiFi Guard.

Once you download the app, it will scan your router and show you a list of all the devices connected to it, and you can browse that list for devices you don't know.

Keep in mind that although many devices have recognizable names, such as your smartphone, you will find others labeling each an "unknown device", and this can make it difficult to tell if you have an intruder on your network.

Another way to check what's on your network is via the router app itself, or by logging into your web browser's control panel.

This method is more complicated to use, but it also allows checking all the devices connected to the router.

How to block WiFi networks

If you are sure that someone is using your network for "Wi-Fi" without your permission, there is an easy way to stop blocking them, just change your router password, and they will be logged out of your network.

You can do this from your router's dashboard page, and experts recommend using strong, hard-to-guess passwords to deter hackers.

It is important that you use a password that you do not use on any other service, to keep the router as secure as possible.