ESET analysts reported that cybercriminals can use smartwatches to steal personal data and warned Russians about the main dangers associated with this gadget. 

"According to our estimates, the market for smartwatches and fitness trackers will grow by 12.5 percent annually and will exceed $118 billion by 2028. Such indicators cannot but attract scammers. Therefore, it is worth understanding in advance the security and privacy risks associated with this," the ESET study says. 

The threat of data interception is due to the fact that many smartwatches and fitness trackers are synchronized with the owners' smartphones, including some applications such as e-mail or messengers. Thus, attackers can hijack both devices, which threatens, in particular, the loss of passwords. ESET further warns that the stolen personal data can then be sold on the darknet. 

Another serious risk for a cybercriminal's victim is tracking the GeoPosition of the device. Such data allows hackers to draw up a detailed diagram of the user's movements in order to attack his home or car. "The safety of children's smartwatches, which can be monitored by outsiders, is even more worrying," ESET states. Speaking about the specific vulnerabilities of smart fitness trackers, cyber specialists pay attention to Bluetooth technology, in which "numerous vulnerabilities have been discovered over the years," weak software of gadgets and paired smartphone applications that may contain coding errors. 

According to ESET analysts, risks can be reduced via the use of two-factor authentication, the use of a strong password to lock the screen, as well as a ban on external connections to smartwatches will also prevent threat. 

Data can be leaked both via the Internet and via Bluetooth a critical Bluetooth vulnerabilities allow executing arbitrary malicious code on the device and gaining full control over the device's system, as well as carrying out a man-in-the-middle attack (MiTM), which leads to the unauthorized interception of user data.