Communication network security not only continuously provides convenience for humans, but also creates security risks due to the open and intelligent nature of the network. The purpose of this article is to use blockchain technology (BCT for short here) to solve the problem of communication network security being invaded, and analyze this for network security on the blockchain through consensus mechanisms. After introducing the methods of consensus mechanisms such as Proof of Work (POW), Proof of Stake (POS), and PBFT (Practical Byzantine Fault Tolerance), this article mainly conducted experimental discussions on the PBFT consensus mechanism. Finally, this article concluded that comparing PBFT with TBFT (Tencent Byzantine Fault Tolerance), the improvement space of TBFT still needs to be improved. After the methods of these consensus mechanisms, experimental analysis was mainly conducted for the PBFT consensus mechanism. The average time for generating experiments was 0.027 ms, and the average time for verifying experiments was 0.002 ms. Finally, it can be concluded that comparing PBFT with TBFT in this article, the improvement space of PBFT still needs to be improved.

Ziyi Huang. Blockchain Based Communication Network Security Intrusion Detection Data. International Journal of Big Data Intelligent Technology (2026), Vol. 7, Issue 1: 102-113. https://doi.org/10.38007/IJBDIT.2026.0701113.

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