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What is bluejacking and how to avoid it?

Bluejacking is a form of cyber-attack that occurs through Bluetooth wireless technology. It involves sending unsolicited messages, such as spam or even malicious content, to Bluetooth-enabled devices such as smartphones, laptops, or tablets. Although bluejacking is considered a relatively harmless form of cybercrime, it can still be annoying and intrusive. In this article, we will explore what bluejacking is, how it works, and how to avoid it.





How does bluejacking work?

Bluejacking is made possible by Bluetooth technology that is built into many electronic devices. Bluetooth is a wireless technology that allows devices to communicate with each other without the need for cables. It uses radio waves to establish a short-range connection between two devices, typically within a range of 10 meters.


The basic principle behind bluejacking is to exploit a Bluetooth-enabled device's ability to receive unsolicited messages. The attacker sends a message to a target device, which appears as a notification on the device's screen. The message can be anything from a simple greeting to a malicious link or spam.

How do bluejacking attacks take place?

Bluejacking attacks are relatively easy to execute and require only a Bluetooth-enabled device and some basic technical know-how. An attacker can carry out a bluejacking attack in a crowded public place, such as a mall or a train station, where there are many Bluetooth-enabled devices within range.


The attacker scans for nearby Bluetooth-enabled devices and sends a message to the target device, which appears as a notification on the device's screen. The attacker can then interact with the target device by sending additional messages or accessing its features.

Bluejacking vs. blue bugging

Bluejacking is often confused with another type of Bluetooth-based cyber-attack called blue bugging. Blue bugging is a more advanced form of Bluetooth hacking that involves gaining unauthorized access to a target device's functions and data.

Unlike bluejacking, which relies on the target device's ability to receive unsolicited messages, blue bugging requires the attacker to gain access to the target device's PIN or pairing code. This is typically done by exploiting vulnerabilities in the Bluetooth protocol or by using brute-force attacks to guess the PIN.

How to protect yourself from bluejacking attacks

Although bluejacking is not a serious threat, it can still be annoying and intrusive. Here are some tips to protect yourself from bluejacking attacks:


Turn off Bluetooth when you're not using it. This will prevent attackers from scanning for your device and sending unsolicited messages.


Use a strong PIN or pairing code. This will make it more difficult for attackers to gain unauthorized access to your device.


Only accept messages from trusted sources. Be wary of messages from unknown senders and avoid clicking on links or downloading attachments from unsolicited messages.


Keep your device's software up to date. This will help to patch any security vulnerabilities that could be exploited by attackers.

Is bluejacking dangerous?

Bluejacking is not considered a serious threat as it does not involve gaining access to a target device's data or functions. However, it can still be annoying and intrusive, especially if the attacker sends a large number of unsolicited messages.

The real dangers

While bluejacking is relatively harmless, it is important to note that Bluetooth technology can be vulnerable to more serious forms of cyber-attacks. For example, an attacker could use Bluetooth to gain unauthorized access to a target device's data or functions, which could result in identity theft or other serious consequences.


Therefore, it is important to take the necessary precautions to protect yourself from all forms of Bluetooth-based cyber-attacks, including bluejacking and blue bugging. By following the tips outlined in this article, you can help to keep your devices and personal information safe from potential threats.

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