Attacks from IoT devices
Attackers quickly learned how to use DDoS attacks as well as various dedicated devices connected to the Internet - the Internet of Things. This is already an integral part of the life of modern households. In the case of such an attack, the network of controlled computers is not attacked, but tens to hundreds of thousands of different devices, such as webcams, baby monitors, routers, set-top boxes, smart TVs, or smart home controllers.
The lack of security of approximately one billion such devices connected to the Internet creates an environment that can be misused for online attacks, with literally devastating consequences. The IoT devices being abused will overload DNS servers with a huge amount of communication requirements. This burdens the network infrastructure enough so that it no longer pursues user requirements, and in the worst case collapses completely. Since individual DNS servers are interconnected, there is often a chain reaction where this problem spreads to other DNS servers.