Research on Security Monitoring for Virtual Machines in Cloud Computing focuses on ensuring the integrity, availability, and confidentiality of virtualized environments by detecting and mitigating potential threats in real time. Modern approaches employ AI-driven monitoring, anomaly detection, and automated threat response systems to identify suspicious activities within virtual machines and the underlying hypervisors. Techniques include continuous auditing of virtual machine behavior, analysis of network traffic, and monitoring of system calls to prevent attacks such as VM escape, privilege escalation, and lateral movement. Overall, these security monitoring strategies aim to provide robust protection for virtualized cloud infrastructures, ensuring resilient, trustworthy, and secure operations across multi-tenant and dynamic cloud environments.