Who's Using My Wi-Fi? 7 Network Scanning Apps + Instructions

Have you noticed your internet has slowed down and your data is running out early? Perhaps unauthorized devices have connected to your Wi-Fi—neighbors, guests who forgot to disconnect, or even hackers. In 2026 every third user encounters unauthorized access to your home network, and most often the culprit is a weak password or vulnerabilities in the router settings.

Checking connected gadgets through the router's web interface is not always convenient: addresses 192.168.0.1 or 192.168.1.1 are forgotten, and the interfaces of different manufacturers (TP-Link, ASUS, Keenetic) are very different. Much easier to use special mobile applications — they scan the network in seconds, displaying IP addresses, MAC addresses, and even device models. In this article, we tested 7 popular programs for Android And iOS, compared their capabilities and compiled step-by-step instructions.

Why is it important to monitor Wi-Fi connections?

According to data Kaspersky Lab, 68% of traffic leaks On home networks, this happens due to third-party devices. This not only slows down speed but also creates risks:

• 🔍 Identity theft: Attackers can intercept passwords for social networks or banking applications through your network.
• 📉 Traffic overuseIf you have a limited data plan, your "cheeky neighbors" can use up all your gigabytes in a couple of days.
• 🚨 Spread of viruses: An infected device on your network can attack other gadgets.
• 📡 Problems with the law: If pirated content is distributed through your IP, you will be held accountable.

Many providers (eg Rostelecom or Beeline) block access to router settings for users out of the box, offering simplified control panels. In such cases network scanning applications become the only way to get complete information about connected devices.

⚠️ Note: Some applications require root rights on Android for in-depth traffic analysis. This may void your smartphone's warranty and create security holes. Weigh the risks before installing such apps.

Top 7 Apps for Checking "Who's Using My Wi-Fi"

We have selected programs with high ratings in Google Play And App Store (rating 4.5+), tested them on routers Xiaomi AX3600, TP-Link Archer C6 And Keenetic GigaThe table below shows the key characteristics:

Important: Apps like NetCut with device blocking features may violate the terms of service of some providers (e.g., MTS or MegaFon). Please check your contract before using them.

How to use Fing – step-by-step instructions

Fing — one of the most popular network analysis applications with a database of over 5 million devices. It identifies not only MAC addresses but also device models (for example, iPhone 13 or Samsung Smart TV Q60B).

Instructions for Android/iOS:

1. Download Fing from the official store (links: play.google.com or apps.apple.com).

2. Connect to your Wi-Fi network (the app only scans the current network).

3. Click "Scan" — the process will take 10-30 seconds.

4. In the list of devices, pay attention to:

   • 🔹 Unknown manufacturers (For example, Unknown or Generic).
   • 🔹 Devices with unusual names (like hacker123).
   • 🔹 Gadgets that should not be connected (For example, Smart TV, if you don't have it).

In the free version Fing Displays up to 5 devices per list. A premium subscription (from ₽299/month) is required for a full analysis.

Check your MAC address in your router settings|Change your Wi-Fi password to a more complex one|Enable MAC filtering|Update your router firmware-->

NetCut: How to Disconnect Other People's Devices from Your Network

NetCut — a powerful tool that not only scans the network, but can also force shutdown third-party gadgets. However, they are required for operation. root rights on Android (not available on iOS).

Algorithm of actions:

1. Install NetCut from Google Play (search for "netcut arcai").
2. Start a network scan (click the "Scan" button).
3. In the list of devices, select the suspicious one and click "Cut Off".
4. Confirm the action - the device will be disconnected from Wi-Fi.

⚠️ Warning: Using NetCut may be considered network interference by your provider. This is prohibited by contract for some plans (e.g., corporate plans). Please check the terms and conditions in your personal account before using it.

If the device reconnects after disconnecting, it means:

• 🔄 He has static IP (configure DHCP server in the router).
• 🔐 It uses alternate MAC address (spoofing).
• 📡 The router is vulnerable to ARP spam (firmware update needed).

What is ARP spoofing?

This type of attack involves an attacker sending fake ARP messages into a local network. This causes the victim's traffic to be rerouted through the hacker's device, allowing for data interception or denial-of-service attacks.

WiFi Guard: A Simple Solution for Beginners

WiFi Guard — a minimalist app without unnecessary features. It's ideal for those who don't want to delve into technical details.

Advantages:

• 📱 Works without registration and root rights.
• 🔍 Shows connection history (who was online before).
• 🛡️ There is a built-in network security test.

How to use:

1. Install WiFi Guard and open it.
2. Click Scan the network.
3. The application will automatically compare your current devices with white list (it can be edited manually).
4. Unknown gadgets will be marked in red.

The program's downside is that it doesn't identify device models, only MAC addresses. But it's completely free and doesn't require any unnecessary information.

Who Is On My WiFi: Real-Time Traffic Analysis

What makes this app stand out is that it shows not only the list of devices, but also traffic consumption speed each of them. Useful if the internet is slowing down due to one "gluttonous" gadget.

Peculiarities:

• 📊 Graphs of traffic usage over time.
• 🔍 Identifying the device type (smartphone, PC, IoT gadget).
• 🛠️ Built-in ping test to check for delays.

Instructions:

1. Download and install the application.
2. Connect to your Wi-Fi network.
3. Click "Start" — scanning will take up to 1 minute.
4. In the list of devices, tap on any one - detailed information will open, including IP, MAC And current download/upload speed.

The free version contains ads, but they don't interfere with the basic functionality. The premium version (199 rubles) removes banners and adds notifications about new devices.

Network Analyzer: For Advanced Users

Network Analyzer - This is not just a Wi-Fi scanner, but a full-fledged one. network tool with support ping, traceroute, DNS lookup and other protocols. Suitable for those who want to gain a deeper understanding of their network.

What it can do:

• 🔧 Shows open ports on devices.
• 🌐 Tests connection speed to different servers.
• 📡 Analyzes Wi-Fi signal (noise level, channel overlap).

How to check connected devices:

1. Open the tab "LAN".
2. Click "Scan" — the application will show all active IP addresses.
3. For each IP you can run ping or port scan.

Cons: The interface is overloaded with technical jargon. It can be difficult for a beginner to figure it out without Google.

What to do if you find a foreign device

Found an unfamiliar gadget online? Follow these steps:

1. Check the MAC address in the router settings (section DHCP Clients or Connected Devices). Sometimes apps mistakenly identify their smartphone with a modified MAC as an "intruder."

2. Change your Wi-Fi password to a complex one (at least 12 characters with numbers and special characters). Use generators like 1Password or KeePass.

3. Enable MAC filtering in the router (section Wireless → MAC Filter). Whitelist only your devices.

4. Update your router firmware. Outdated versions often contain vulnerabilities (for example, CVE-2021-20090 in devices TP-Link).

5. Disable WPS - This protocol is vulnerable to brute-force attacks (even if you have a complex password).

If the suspicious device appears again:

• 🔄 Reset your router to factory settings (button Reset on the back panel).
• 📡 Change the network name (SSID) - Sometimes hackers target standard names like TP-Link_1234.
• 🛡️ Install alternative firmware (For example, OpenWRT or DD-WRT) for advanced security features.

⚠️ Warning: MAC filtering is not a panacea. A skilled attacker can spoof their device's MAC address (MAC-spoofing). For reliable protection, combine several methods.

FAQ: Frequently Asked Questions about Wi-Fi Scanning

Is it possible to find out who exactly is using my Wi-Fi (name, address)?

No, the apps only show technical information (MAC, IP, device model). To determine the owner's identity, you need to report unauthorized access to the police—they can request data from the provider using the IP address (but this is time-consuming and not always effective).

Is it true that my neighbors can connect to my Wi-Fi even with a password?

Yes, if:

• 🔑 The password is weak (for example, 12345678 or qwerty).
• 📡 Enabled WPS (vulnerable to brute force).
• 🖥️ The router is infected with a virus (for example, VPNFilter).
• 📶 The Wi-Fi signal is too strong and extends beyond the apartment.

Use WPA3 (not WPA2) and disable WPS in the settings.

Why do apps show my devices as "unknown"?

This happens if:

• 📱 At the device MAC address broadcast is disabled (privacy settings in iOS/Android).
• 🔧 Device manufacturer not added to the database applications (relevant for rare brands).
• 🔄 MAC address changes dynamically (randomization function in modern smartphones).

To avoid confusion, please add your gadgets manually white list in the application settings.

Can my ISP see that I'm scanning the network?

No, local area network (LAN) scanning is not visible to the provider – it happens within your home networkHowever, if you use tools like NetCut for active intervention (disabling devices), this can be recorded in the router logs, to which the provider has access (if the router is his).

How to protect Wi-Fi from hackers 100%?

There is no absolute protection, but these measures will make it as difficult as possible for attackers:

1. 🔐 Password: 16+ characters, with capital letters, numbers and special characters (example: kL9#pQ2!xY4@mN1*).
2. 📡 Protocol: WPA3-Personal (if the router supports it).
3. 🖥️ Firmware: update once every 2-3 months.
4. 🌐 Guest network: separate SSID for friends with speed limits.
5. 🛡️ VPN on the router: encrypts all traffic (e.g. NordVPN or ProtonVPN).