In many Bluetooth devices, gaps have been identified, including fitness bracelets or smart home devices. The errors found can be used to cause a failure or to give the attacker the right to read and write data. Singapore researchers have informed device manufacturers so many of them have prepared or are preparing patches. The main challenge will be to make sure that people who should manually update their software do so. The comforting situation is that an attack on these holes cannot be made via the Internet. The attacker must be near the attacked device. However, the biggest problem is medical devices. Attacks can be made on pacemakers, glucose monitors, and drug delivery devices. Meanwhile, the holes allow them to fail, force restart, and block them or take control over them. The latter method of attack poses the greatest