Bluetooth is one of the widely used technologies that provides a range of features for users, from handsfree calls to connecting wireless headphones. However, like many other communication technologies, Bluetooth is not immune to security flaws. In an era when personal data has become one of users' most valuable assets, exercising caution when using this technology has gained special importance.
How can Bluetooth be a path for hackers to gain access?
Although Bluetooth pairing usually requires user confirmation before connecting to another device, this limitation does not mean the technology is completely secure against hacker intrusion. One prominent example in this area was the discovery of vulnerabilities in Fitbit devices and some other Bluetooth-based hardware. These vulnerabilities, rooted in open-source algorithms, can enable malicious actors to decode users' locations; an example that experts say is only a small part of the broader security problems of this technology.
On the other hand, recent research by the Insinuator institute has shown that a new vulnerability has been identified in Airoha-based hardware; a flaw that allows attackers within Bluetooth range to eavesdrop on users' conversations and extract sensitive information such as phone numbers, contact lists, and call history from their devices.
Simple measures to improve Bluetooth security
Fortunately, by observing a few simple tips, vulnerability to these threats can be significantly reduced. The first and most important recommendation is to keep Bluetooth turned off when not in use; this limits the time the device is exposed to risk and reduces the likelihood of attacks such as Bluebugging and Bluesnarfing, both of which rely on close-range connections to the device.
It is also recommended that users set their device's Bluetooth to "hidden" rather than "discoverable"; this setting prevents the device from being identified by unknown sources.
According to Engadget, another important point concerns users who connect their phones to rental cars or intend to sell their personal vehicle. In such cases, it is necessary to remove the phone's Bluetooth pairing from the car before handing it over and to erase all personal information stored in the car's system. It should also be noted that using systems like wireless Android Auto, because they require both Bluetooth and Wi‑Fi simultaneously, creates more attack surfaces. One suggested measure in this regard is to disable Android Auto's automatic connection by setting the related option to "Never."
iPhone users should also be wary of the Live Listen feature; a capability that forwards audio captured by the phone's microphone to AirPods, hearing aids, or supported headphones. Because this feature relies on Bluetooth, it can expose the device to a greater risk of Bluebugging attacks. Users who wish to disable this feature can turn off Live Listen via the phone's Accessibility settings.
Continuous discovery of new vulnerabilities in Bluetooth technology
Continuous monitoring of security reports related to Bluetooth-based hardware is very important, because every device may face its own unique vulnerability. One recent example is a security flaw identified in seventeen audio devices equipped with Google Fast Pair technology. According to Wired, researchers at KU Leuven University in Belgium found that hackers, by having only the device model number, can trace users' locations and eavesdrop on them. These researchers subsequently released a tool called WhisperPair.eu that allows users to check how vulnerable their device is.
Conclusion
Ultimately, keeping Bluetooth turned off when not needed, along with following other security recommendations from the U.S. Federal Communications Commission (FCC), can play an effective role in enhancing personal security and protecting users' information. Given the growing concerns about privacy in the technology domain, following these simple tips can be a good first step toward greater peace of mind and more effective protection of users' personal data.