Blog | G5 Cyber Security

Verify Device Information

G5 Cyber Security

TL;DR

Untrusted devices can show false information. This guide explains how to check if what you see on a device is real, using multiple methods and tools.

1. Understand the Risks

Devices like phones, tablets, or computers can be modified to display incorrect details about themselves. This could include fake serial numbers, model names, operating system versions, or even installed software. Why might someone do this? To hide stolen devices, bypass security measures, or commit fraud.

2. Check Physical Labels and Packaging

  1. Serial Number: Locate the physical serial number on the device itself (often under the battery, in a SIM tray, or etched onto the casing). Compare this to any serial number displayed in the device’s settings.
  2. Model Number: Similarly, find the model number physically and compare it with what’s shown in the settings.
  3. Original Packaging: If you have the original box and documentation, check if the information on those matches the device.

3. Use Device Settings (with Caution)

Device settings can be faked, but they’re a good starting point. Be aware that these are easily manipulated.

  1. Android: Go to Settings > About phone. Note the model number, Android version, and build number.
  2. iOS (iPhone/iPad): Go to Settings > General > About. Note the Model Name, Hardware Version, and Software Version.
  3. Windows: Press Win + R, type msinfo32 and press Enter. Check System Manufacturer, System Model, and OS Version.
  4. macOS: Click the Apple menu > About This Mac. Note the Model Name, Chip, Memory, and macOS version.

4. Use Diagnostic Tools

These tools can provide more reliable information about the device’s hardware.

  1. Android: Apps like ‘Device Info HW’ (available on Google Play) can read low-level hardware details. Be careful when granting permissions to these apps!
  2. iOS: iOS is more restricted, but tools like iMazing (requires a computer connection) can extract detailed device information.
  3. Windows: Use the Command Prompt or PowerShell. For example, to get the BIOS serial number: 
    wmic bios getserialnumber

    To get system manufacturer and model:

    wmic cpusystem get Manufacturer, Model
  4. macOS: Use System Information (Applications > Utilities). Select Hardware > Serial Number.

5. Check Online Databases

Several websites can help you verify device information against known databases.

  1. IMEI/Serial Number Checkers: Websites like IMEI.info (for phones) allow you to enter the IMEI or serial number and get details about the manufacturer, model, and sometimes warranty status.
  2. Manufacturer’s Website: Visit the device manufacturer’s website (e.g., Apple, Samsung, Dell) and use their support tools to verify the serial number.

6. Network Information

If the device connects to a network, you can sometimes get clues about its authenticity.

  1. MAC Address Lookup: Find the MAC address of the device (usually in Wi-Fi settings). Use an online MAC address lookup tool to identify the manufacturer. This doesn’t guarantee authenticity but can reveal inconsistencies.

7. Cyber security Considerations

If you suspect a device is compromised, take these steps:

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