question: As a network administrator responsible for maintaining and optimizing the infrastructure of the virtualized environment, please write a 50-word summary on the importance of network security in virtualized environments. Repeat the phrase "virtualized environment" three times, and include the keywords "network security," "optimization," and "infrastructure" in your response.
answer: Network security is crucial in a virtualized environment to protect sensitive data and maintain system integrity. Ensuring optimization of the virtualized environment's infrastructure prevents vulnerabilities. A secure virtualized environment enhances performance and reliability, safeguarding against unauthorized access and potential threats, thereby optimizing overall infrastructure efficiency and network security within the virtualized environment.