The proliferation of connected devices and their growing interconnection generate an increasing amount of data that is transmitted between devices and then over the Internet. This greatly increases the risk of security vulnerabilities being exploited. An IoT system is like a chain with a level of security that matches the strength of the weakest link in the chain.

We should also be wary of certain interfaces or technologies, such as Bluetooth, that are vulnerable by design. They can be easily compromised and lead to information leaks.

Unfortunately, the risk of information leakage often stems from neglecting the proper use of the IoT object in its digital environment. The reasons may vary:

• purchase of equipment with archaic and insecure communication protocols,
• insufficient IT security configurations,
• weak or non-existent passwords,
• voluntary or involuntary provision of data by the user, but the results are the same: an information leak can endanger entire organisations or the private lives of individuals.