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How to Detect if Someone’s Stealing Your WiFi?

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  • Last Updated : 10 May, 2020
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When it comes to finding out who’s using our Wifi, there are n number of softwares available on the internet. As we know, that all Softwares are not to be trusted so here in this article we will look at an approach that is being used by most professionals and it only uses your “Command prompt” or “Terminal”.

To detect WiFi theft, follow the steps given below:

Step 1: Open terminal or command-prompt of the Operating System
Type “sudo apt install net-tools” (for Linux and Mac users).

sudo apt install net-tools 

Note: Windows has it installed by default.

After installing, type


Go to “wlp3s0” and find “inet” in the second line(shown in the image above). Copy that IP address.

Step 2: Install nmap
Type the following command (for Linux and Mac)

sudo apt install nmap 

For Windows, Follow this link to install Nmap Nmap for Windows.

After installing, type

nmap -sP 

Paste your IP address instead of “” followed by “/24” and run the above command.
Finally, you will get all the connected devices to your Wifi.

If you see that there are any extra users, that means someone if stealing your wifi.

Best precautions:

  • If you have an open wifi, secure it using a password.
  • If you find such instances, change your password.
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