Computer network security is crucial in protecting computer networks and their associated devices, software, and data from unauthorized access, attacks, and damage. The rapid advancement of technology has greatly improved our productivity, but it has also brought significant security risks, especially in the era of big data. These issues require everyone's attention. This study focuses on recent computer network security issues and proposes preventive measures. It is recommended to hire a professional team to conduct regular security audits, promote security awareness, change passwords regularly, download and install network firewall software, timely disclose security vulnerabilities, and for the government to introduce online privacy regulations.
