TheShared Responsibility Modelin cloud computing establishes that:
* Cloud providersare responsible for securing the underlyinginfrastructure, networking, and hardware.
* Customers (organizations)are responsible for securingdata, identity and access management (IAM), encryption, and complianceobligations.
* Data ownershipremainswith the customer, even though visibility into cloud infrastructure may be limited.
The major security challenge in cloud computing is thatorganizations lack full control over cloud infrastructurebut must still ensure that security policies align withregulatory requirements (e.g., GDPR, HIPAA, PCI DSS).
This principle is outlined in:
* CCSK v5 - Security Guidance v4.0, Domain 2 (Governance and Enterprise Risk Management)
* Cloud Security Alliance's (CSA) Cloud Controls Matrix (CCM) - Data Security and Governance.

The CSA STAR Registry provides transparency by listing security and privacy controls of CSPs, helping customers assess provider security. Reference: [CCSK Overview, STAR Registry]

One of the biggest challenges incloud security risk assessmentisthe lack of transparencyregardingcloud provider operations and security controls.
Key Issues with Limited Visibility:
* Cloud providers manage infrastructure at a global scale:
* Customerscannot directly inspectsecurity implementations.
* Rely onthird-party attestationslikeSOC 2, ISO 27001, CSA STARinstead of direct assessments.
* Multi-tenancy complexities:
* Cloud customersshare infrastructurewith other tenants.
* Data isolation mechanisms (e.g., virtual private clouds, encryption)must be trustedwithout direct verification.
* Regulatory compliance challenges:
* Organizations handling sensitive data (e.g., healthcare, finance)requirestrict controls.
* Cloud providers may not offer sufficient audit logsor control overdata residency and processing.
* Incident response limitations:
* In traditional IT, organizations controllog access, forensic analysis, and recovery.
* In the cloud,incident investigation depends on the provider's logging and notification practices.
Thisvisibility issueis extensively covered in:
* CCSK v5 - Security Guidance v4.0, Domain 4 (Compliance and Audit Management)
* ENISA's Cloud Computing Risk Assessment (Limited visibility into cloud provider security policies)

During the Detection and Analysis phase of incident response, the primary objective is to validate alerts to determine whether they represent a genuine security incident, and to estimate the scope of the incident to understand the potential impact on the organization. This phase involves analyzing evidence, confirming the nature of the incident, and gathering the necessary information to move forward with containment and remediation.
Developing and updating incident response policies is important but occurs more during the preparation phase, not during the detection and analysis of an active incident. Performing detailed forensic investigations typically takes place during later phases, such as Containment, Eradication, & Recovery or Post-Incident Analysis. Implementing network segmentation and isolation may be part of the Containment phase but is not the primary focus during the Detection and Analysis phase.