Telecommunications or telecom technology is the underpinning of the modern internet, and consequently, the internet’s growing segment, the internet of things (IoT). Likewise, the global telecommunications network we enjoy today has been greatly influenced by the existence and growth of the internet. Between telecom and the internet is a two-way relationship, even an indistinguishable divide for users.

https://blog.trendmicro.com/trendlabs-security-intelligence/telecom-crimes-against-the-iot-and-5g/