You’re supposed to turn Bluetooth off when you don’t need it – how risky is it really?
You don’t need to stop using Bluetooth completely but a few simple habits can reduce unnecessary risks.
You are advised to switch off Bluetooth when it is not in use, according to the Australian Cyber Security Centre. This is because leaving it on can create potential security risks. Your smartwatch, phone, car, wireless earbuds and headphones may all connect to numerous Bluetooth-enabled devices. Even on a crowded bus, dozens of these devices could be within range.
Bluetooth is a short-range wireless technology that allows devices to communicate wirelessly. When enabled, your phone constantly sends out signals asking "is there anything nearby?" This can potentially be exploited by attackers. However, modern Bluetooth security includes authentication, encryption and protection against unauthorised access.
So, what are the official recommendations? The Australian Cyber Security Centre advises turning Bluetooth off when not in use to remove a potential avenue for attack. Many devices today rely on persistent Bluetooth connections, making continuous scanning a reality for many users.
If you leave Bluetooth on all day, your phone remains capable of using Bluetooth services, scanning in the background. This could provide attackers with a potential point of entry.
The situation can be compared to a front door - having Bluetooth on is not like leaving the door wide open, but more like having an extra door. Modern security can make this secondary door difficult to exploit. Yet, poorly secured devices can still pose risks.
A recent Australian case involving inexpensive smart glasses showed this. Some were vulnerable to Bluetooth attacks without a password, allowing attackers to control the glasses and access stored photos and videos. The issue was not Bluetooth becoming insecure, but rather the devices being poorly secured.
As more everyday objects gain Bluetooth connections, security depends not only on your phone but on the overall connected ecosystem. So, should you turn Bluetooth off? While it doesn't mean strangers will access your phone, you can reduce unnecessary exposure. Turn Bluetooth off when not needed, keep your devices updated, reject unexpected pairing requests, remove old connections, and check which apps have Bluetooth permission. By following these simple steps, you can minimise potential risks.
Written by urgent.news from The Conversation AU's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
