you can use the idea of Software-Defined Networking (SDN) to improve security in the IoT - especially against DDoS Attacks - through the use of Honeypots. See these literature sources.
Best regards
Anatol Badach
Xupeng Luo, Qiao Yan, Mingde Wang, Wenyao Huang: Using MTD and SDN-based Honeypots to Defend DDoS Attacks in IoT; Computing, Communications and IoT Applications (ComComAp), Oct 2019
https://ieeexplore.ieee.org/document/9018775
Jinwoo Kim, Seungwon Shin: “Software-Defined HoneyNet: Towards Mitigating Link Flooding Attacks”; 47th Annual IEEE/IFIP International Conference on Dependable Systems and Networks Workshops¸ Jun 2017
https://ieeexplore.ieee.org/document/8023704
Chapter SD-IoT Software Defined Internet of Things