Which of the following best describes Information Systems Security?

Information Systems Security primarily focuses on safeguarding the systems that store, process, and transmit information. This option encompasses a broader range of protective measures than merely securing physical locations or managing access permissions. It includes implementing security controls for hardware, software, networks, and data to prevent unauthorized access, use, disclosure, disruption, modification, or destruction of information.

The emphasis on systems indicates that security is not just about the data itself but also about the environment and processes that support that data. This holistic view is crucial in today's networked world, where threats can originate from various sources and can exploit vulnerabilities in systems.

In contrast, while protecting the physical location of data is a part of security, it represents a limited aspect of the broader security landscape. Similarly, controlling user access permissions is critical for safeguarding sensitive information but addresses only one component of security—authentication and authorization. Meanwhile, establishing network protocols, while necessary for communication and interaction between systems, does not directly denote the overall mission of Information Systems Security, which is focused more comprehensively on the protection of information within those systems.