What does Appendix A1 specifically address?

Appendix A1 specifically addresses additional requirements for shared hosting providers. This appendix outlines the unique security considerations that must be taken into account when multiple clients share the same infrastructure and resources. The additional requirements are critical because shared hosting environments can present a higher risk of vulnerabilities, such as data breaches or unauthorized access, due to the interconnected nature of the systems involved.

In particular, the appendix emphasizes the need for stringent security measures to protect both the hosting provider and the individual clients against the potential risks associated with shared resources. This includes ensuring proper isolation between clients, implementing strict access controls, and maintaining high standards for data protection. By focusing on these additional requirements, Appendix A1 aims to provide clarity and guidance for shared hosting providers in order to enhance overall security compliance and mitigate the risks present in such environments.