What security framework focuses on the protection of information systems through layered security strategies?

The selected answer emphasizes the layered security model, which is an essential part of modern cybersecurity practices. This framework, often referred to as "defense in depth," advocates for multiple layers of security controls throughout an information system. By implementing various protective measures at different levels, organizations can reinforce their defenses and reduce the likelihood of a successful cyber attack.

The layered security model operates on the principle that if one layer fails, others will still be in place to thwart potential threats. This includes a combination of physical security, network security, endpoint security, application security, and user training, among other strategies. Each layer serves a specific purpose and addresses different aspects of security, providing a comprehensive approach to protecting sensitive information.

In contrast to other options, the layered security model distinctly stands out by its philosophy of redundancy in security measures. Other options like the single control strategy tend to focus on singular security implementations, while access control models concentrate specifically on restricting access to systems or data. Integrated security approaches may incorporate multiple strategies, but do not emphasize the tiered, layered structure that is characteristic of the layered security model.