Skip to main content
Microsoft 365
March 29, 2024

What is bluesnarfing?

With its accessibility and quick connectivity, its important to employ best privacy and safety practices, as Bluetooth devices are still susceptible to cyber attacks referred to as bluesnarfing.

A pair of wireless earphones

What is the definition of bluesnarfing?

Bluesnarfing, a blend of the words “Bluetooth” and “snarf,” refers to the theft of information or unauthorized access on a Bluetooth-enabled device. Cyber criminals gain access to mobile devices, such as smartphones, laptops, and tablets whose connection has been left open by their owners. Bluetooth-compatible devices communicate with each other using the Object Exchange (OBEX) protocol; attackers exploit security vulnerabilities within OBEX, enabling them to gain unauthorized access to a device’s data, such as contacts, emails, or other sensitive information.

How do you prevent bluesnarfing?

1. Ensure your Bluetooth software is updated

Using outdated Bluetooth software makes devices susceptible to bluesnarfing attacks. Manufacturers regularly release updates to enhance security and address vulnerabilities. Ensure your device isn’t open to exploitation by attackers by routinely updating your Bluetooth software.

Microsoft Defender Banner
Microsoft 365 Logo

Microsoft Defender

Stay safer online with one easy-to-use app1

1Microsoft 365 Personal or Family subscription required; app available as separate download

Learn More

2. Equip your device with robust authentication protocols

Devices lacking robust authentication protocols are more vulnerable to bluesnarfing attacks, which often succeed when proper authentication mechanisms are absent, permitting unauthorized users to connect to the device without the owner’s consent. Enable two-factor authentication (2FA) to discourage attackers from accessing your device. While 2FA may not prevent a bluesnarfing attack, it can deter attackers from infiltrating your online accounts, serving as a viable precautionary measure against various cyber-attacks.

3.Use strong PINS and passcodes

Many devices come with default PINs or passcodes, providing an easy entry point for bluesnarfing attackers. Changing default PINs and using strong, unique passcodes enhances device security and mitigates the risk of unauthorized access.

4. Turn off your Bluetooth when it’s not in use

The most important tool to prevent bluesnarfing is disabling Bluetooth. Attackers can’t gain access to your device if your Bluetooth isn’t enabled. Turn off Bluetooth when you’re not using to eliminate opportunities for criminals to try and connect to your device.

5. Don’t pair devices for the first time in public

Initiate the pairing of devices for the first time in the safety of your home. The pairing process is vulnerable to exploitation by cybercriminals, who may connect to your device. Therefore, it is advisable to perform initial pairings at home. This precautionary measure enhances the security of your device, preventing criminals from gaining unfettered access.

Bluesnarfing poses a threat to your Bluetooth devices, but fortunately, there are tools and best practices available to prevent unauthorized access. To safeguard your devices, make sure they are regularly updated, turn off Bluetooth when not in use, and exercise caution when using it in public spaces. Adhering to these practices is essential to maintaining the security of your Bluetooth devices. For additional methods to improve your device’s security, learn more privacy and safety tips.

Get started with Microsoft 365

It’s the Office you know, plus the tools to help you work better together, so you can get more done—anytime, anywhere.

Buy Now

Topics in this article

Microsoft 365 Word, Excel, PowerPoint, Outlook, OneDrive, and Family Safety Apps
Microsoft 365 Logo

Everything you need to achieve more in less time

Get powerful productivity and security apps with Microsoft 365

Buy Now

Explore Other Categories