Network Inspector scans your current network for vulnerabilities and security issues that may expose your sensitive private data, or leave the devices on your network vulnerable to attacks. In addition, Network Inspector shows which devices are currently connected to your home network, so you can see if anyone is using your network without your consent.
Refer to the sections in this article to learn how to use Network Inspector.
Run a scan
To scan your network for vulnerabilities:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Click Scan network.
- Wait while Network Inspector scans your network for vulnerabilities.
- Refer to the relevant information below according to the message you see on the results screen:
- No problems found on network or No vulnerable devices found: We have not identified any vulnerabilities or security issues on your current network. Click Done.
- Problems found on network or Vulnerable devices found: We have identified vulnerabilities or security issues on your network. For more information, refer to the Resolve an issue section of this article.
Resolve an issue
If Network Inspector detects issues on your network, you see the message Problems found on network or Vulnerable devices found after running a Network Inspector scan.
To resolve each detected vulnerability:
- Read the information in the panel to understand the type of vulnerabilities found. For example, DNS hijack found or Device password leaked.
- Follow the instructions to secure your connection. For example, Turn on VPN.
Alternatively, select Cancel and Yes, leave to proceed without resolving the issues(s). We do not recommend exiting the scan without resolving issues. Your devices will remain vulnerable on the network.
- After following the instructions to resolve the vulnerability, your network is now secure. Click Done to finish running the scan and resolving the issue(s).
Monitor your network
In the paid version of Avast One, you can monitor when a new device joins your network if scan all devices is enabled.
To enable network monitoring:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Click Scan network.
- Wait while Network Inspector scans your network for vulnerabilities. Refer to Resolve an issue if vulnerabilities are found.
- Next to Monitor this network, click the red (OFF) slider so that it changes to green (ON) and select Done.
Network Inspector will now notify you every time a new devices joins this network.
Manage settings
To modify your settings:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Select the Settings tab.
- Tick or untick the following options according to your preferences:
- Automatically rescan home networks and connected devices: Regularly scans your home network and all connected devices. You must give Network Inspector permission to scan all devices to enable this feature.
- Check devices for weak passwords (enabled automatically): Regularly inspects your passwords to ensure they are strong and secure.
Scan all devices
To enable Network Inspector to scan all devices:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Select the Network history tab.
- For each Network, click the red (OFF) slider so that it changes to green (ON).
Only allow Network Inspector to scan all devices while on a home or private network to ensure that you have permission to do a full network scan.
- Click Yes, continue to confirm you have the permission to scan all devices.
Run a scan
To scan your network for vulnerabilities:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Click Scan network.
If you are using
macOS Sonoma, click
See how and follow the on-screen instructions to enable Location Services.

- Wait while Network Inspector scans your network for vulnerabilities.
- Refer to the relevant information below according to the message you see on the results screen:
- No problems found on network or No vulnerable devices found: We have not identified any vulnerabilities or security issues on your current network. Click Done.
- Problems found or Vulnerable devices found: We have identified vulnerabilities or security issues on your network. For more information, refer to the Resolve an issue section of this article.
Resolve an issue
If Network Inspector detects issues on your network, you see the message Problems found or Vulnerable devices found after running a Network Inspector scan.
To resolve each detected vulnerability:
- Read the information in the panel to understand the type of vulnerabilities found. For example, Hacked web traffic found or Device password leaked.
- Follow the instructions to secure your connection. For example, Turn on VPN.
We do not recommend exiting the scan without resolving issues. Your devices will remain vulnerable on the network.
- After following the instructions to resolve the vulnerability, your network is now secure. Click Done to finish running the scan and resolving the issue(s).
Manage settings
To modify your settings:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Select the Settings tab.
- Tick or untick the following options according to your preferences:
- Ask me to scan new networks: Automatically reminds you to scan new networks that you join for the first time.
- Check devices for weak passwords: Regularly inspects your passwords to ensure they are strong and secure.
Scan all devices
To enable Network Inspector to scan all devices:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Select the Network history tab.
- For each Network, click the red (OFF) slider so that it changes to green (ON).
Only allow Network Inspector to scan all devices while on a home or private network to ensure that you have permission to do a full network scan.
- Click Yes, continue to confirm you have the permission to scan all devices.
Monitor your network
In the paid version of Avast One, you can monitor when a new device joins your network if scan all devices is enabled.
To enable network monitoring:
- Open Avast One, click Explore ▸ Network Inspector ▸ Open Network Inspector.
- Select the Network scan tab.
- Next to Monitor this network, click the red (OFF) slider so that it changes to green (ON).
Network Inspector will now notify you every time a new devices joins this network.
Further recommendations
For more information about Network Inspector, refer to the following article:
- Avast One 24.x for Windows
- Avast One 24.x for Mac
- Microsoft Windows 11 Home / Pro / Enterprise / Education
- Microsoft Windows 10 Home / Pro / Enterprise / Education - 32 / 64-bit
- Microsoft Windows 8.1 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 8 / Pro / Enterprise - 32 / 64-bit
- Microsoft Windows 7 Home Basic / Home Premium / Professional / Enterprise / Ultimate - Service Pack 1 with Convenient Rollup Update, 32 / 64-bit
- Apple macOS 14.x (Sonoma)
- Apple macOS 13.x (Ventura)
- Apple macOS 12.x (Monterey)
- Apple macOS 11.x (Big Sur)
- Apple macOS 10.15.x (Catalina)
- Apple macOS 10.14.x (Mojave)
- Apple macOS 10.13.x (High Sierra)
Updated on: 4/27/21