How cyberattacks on smart devices are hitting everything from supermarket fridges to cars

Recent security incidents affecting connected retail systems in Europe demonstrate the physical impact of IoT vulnerabilities, from commercial refrigerator temperature manipulation in France to IT disruptions at Ahold Delhaize in Belgium and Luxembourg.

In theory, any device that connects to the internet, either directly or through apps and services, could be a target. Vulnerable devices include security cameras, video doorbells, smart locks, thermostats, home appliances and network routers, with the latter accounting for more than three-quarters of attacks on connected devices. When attackers compromise a device, they can steal personal data, record conversations, change settings or use the device as a backdoor to penetrate the wider home network.

The risks aren’t limited to the home. Researchers have previously shown that they can remotely take control of moving vehicles by exploiting their connected entertainment systems, leading to major car recalls. However, critical infrastructure, such as water and power grids, is protected by multiple layers of security and monitoring, making them much more difficult targets than household appliances.

To protect devices, experts recommend immediately changing factory passwords, enabling two-factor authentication where available, and regularly updating their software. At the same time, it is suggested to limit device connections to the internet only when there is a real need and avoid unnecessary connected devices in the home, in order to reduce potential entry points for malicious users.

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