Big data algorithm for computer network information security in the 5G era.

This article focuses on enhancing computer network information security in the 5G era by developing a protection system based on an information security algorithm utilizing Orthogonal Frequency Division Multiplexing (OFDM) technology. It analyzes the unique security challenges posed by 5G networks, such as increased attack surfaces due to higher speed, capacity, and low latency, and proposes advanced security measures including encryption, identity authentication, and network monitoring. Experimental results, including surveys of college students and comparative evaluations, indicate that the OFDM-based security system improves network information security by 13.4% and achieves higher user satisfaction compared to traditional systems. The paper acknowledges limitations such as sample scope and evolving 5G vulnerabilities, recommending further research to optimize algorithms and broaden applicability across diverse network environments.