Bluetooth attacks

Bluetooth attacks are attempts to pair with, spy on or send unwanted files to a nearby phone or earbuds when Bluetooth is left open and discoverable.

Bluetooth attacks: Bluetooth attacks use the short-range wireless link in phones, earbuds and cars to reach a device nearby. An attacker may try to pair without permission, send unwanted files or messages, or exploit an old software flaw. They need to be within a few metres.

In crowded places such as trains, metros, markets and events, devices with Bluetooth left on and visible can get pairing requests or unwanted file offers. Most of these are pranks, but some aim to push malware or to eavesdrop. Old accessories and unpatched phones are the weakest points. Fixed headphones and car units may keep old pairing records, so clear them if you sell or lend the device.

Keep Bluetooth off when you do not need it, and never accept pairing codes that you did not start. Remove old paired devices you no longer use. Update your phone, and keep earbuds and car systems updated if their apps offer updates. Public chargers and shared devices deserve similar care. Remember that most nearby requests are only annoying, but there is no reason to accept any of them.

Tips

• Turn Bluetooth off when you are not using it, especially in crowded places.
• Decline any pairing request or file you did not start.
• Remove old paired devices in Bluetooth settings and update your phone regularly.

Related terms