Cloud Security Alliance CCSK - Certificate of Cloud Security Knowledge (CCSKv5.0)

The core tenet of Zero Trust is thatno entity—internal or external—should be trusted by default. Every request for access must be authenticated, authorized, and encrypted based on granular access policies and continuous validation of identity, device health, location, and behavior.

ZT eliminates reliance on traditional network perimeter models (which B and A describe), focusing instead on microsegmentation and dynamic policy enforcement to prevent lateral movement within a network.

This approach is detailed inDomain 7: Infrastructure Securityof the CCSK guidance. It emphasizes identity-aware access control, continuous monitoring, and contextual risk assessment as foundational elements of a secure Zero Trust framework.

Access policies are a critical component of security frameworks that specify and enforce the permitted actions that users or systems can perform on resources, such as files, applications, or services. These policies help ensure that only authorized individuals or systems have access to certain resources and that they can only perform authorized actions, such as reading, writing, or modifying the resources. Access policies are fundamental in managing security and preventing unauthorized access, misuse, or attacks.

Access policies encrypt sensitive data is incorrect because encryption of sensitive data is typically handled by encryption policies, not access policies. Access policies determine where data can be stored is more related to data management policies rather than access control. Access policies scan systems for malware is related to security measures such as antivirus or anti-malware tools, not the scope of access control policies.

The primary objective of cloud governance in an organization is to align cloud usage with corporate objectives. Cloud governance ensures that the cloud resources, services, and strategies are used effectively and efficiently, supporting the organization’s overall goals and priorities. It involves establishing policies, compliance measures, and management practices to ensure that cloud adoption and usage are aligned with business needs, security requirements, and regulatory obligations.

Implementing multi-tenancy and resource pooling is important for cloud infrastructure but is more related to the underlying technology rather than governance. Simplifying scalability and automating resource management are benefits of cloud environments, but they are more about cloud architecture and operations than governance. Enhancing user experience and reducing latency are concerns of performance optimization and user interface design, not the primary focus of cloud governance.

Taking snapshots of virtual machines (VMs) is one of the most effective techniques for preserving digital evidence in a cloud environment. Snapshots capture the entire state of a VM, including its memory, configuration, and disk contents at a particular point in time. This allows investigators to preserve evidence as it was at the moment of the incident, enabling detailed analysis without altering the original state of the system.

While isolating the compromised system is important to prevent further damage, snapshots are more directly useful for preserving evidence. Backing up data and analyzing management plane logs are also valuable for incident response, but they don't capture the complete state of a compromised system as effectively as snapshots do.

Serverless functions are designed to run in isolated, ephemeral environments, meaning that each execution is independent and temporary. These functions are typically event-driven and executed on-demand, without the need for pre-allocated server resources. Once the function finishes executing, the environment is discarded, making it highly efficient and scalable. This architecture abstracts away infrastructure management, allowing developers to focus on the code itself.

Implementing these controls supports data governance and compliance by providing visibility into data handling and potential exposures. Reference: [Security Guidance v5, Domain 9 - Data Security]