CCAK Exam Dumps - Certificate of Cloud Auditing Knowledge

Reputation-based trust is a category of trust in cloud computing that relies on the feedback, ratings, reviews, or recommendations of other users or third parties who have used or evaluated the cloud service provider or the cloud service. Reputation-based trust reflects the collective opinion and experience of the cloud community regarding the quality, reliability, security, and performance of the cloud service provider or the cloud service. Reputation-based trust can help potential customers to make informed decisions about choosing a cloud service provider or a cloud service based on the reputation score or ranking of the provider or the service. Reputation-based trust can also motivate cloud service providers to improve their services and maintain their reputation by meeting or exceeding customer expectations.

Reputation-based trust is one of the most common and widely used forms of trust in cloud computing, as it is easy to access and understand. However, reputation-based trust also has some limitations and challenges, such as:

The accuracy and validity of the reputation data may depend on the source, method, and frequency of data collection and aggregation. For example, some reputation data may be outdated, incomplete, biased, manipulated, or falsified by malicious actors or competitors.

The interpretation and comparison of the reputation data may vary depending on the context, criteria, and preferences of the customers. For example, some customers may value different aspects of the cloud service more than others, such as security, availability, cost, or functionality.

The trustworthiness and accountability of the reputation system itself may be questionable. For example, some reputation systems may lack transparency, consistency, or standardization in their design, implementation, or operation.

Therefore, reputation-based trust should not be the only factor for trusting a cloud service provider or a cloud service. Customers should also consider other forms of trust in cloud computing, such as evidence-based trust, policy-based trust, or certification-based trust

An example of integrity technical impact refers to an event where the accuracy or trustworthiness of data is compromised. Option D, where a hacker uses a stolen administrator identity to alter the discount percentage in the product database, directly affects the integrity of the data. This action leads to unauthorized changes to data, which is a clear violation of data integrity. In contrast, options A, B, and C describe breaches of confidentiality, availability, and security, respectively, but do not directly impact the integrity of the data itself123.

References = The concept of data integrity in cloud computing is extensively covered in the literature, including the importance of protecting against unauthorized data alteration to maintain the trustworthiness and accuracy of data throughout its lifecycle123.

 A DDoS attack renders the customer’s cloud inaccessible for 24 hours, resulting in millions in lost sales is an example of financial business impact. Financial business impact refers to the extent of damage or harm that a threat can cause to the financial objectives and performance of the organization, such as revenue, profit, cash flow, or market share. A DDoS attack can cause a significant financial business impact by disrupting the normal operations and transactions of the organization, leading to loss of sales, customers, contracts, or opportunities. According to a report by Kaspersky, the average cost of a DDoS attack for small and medium-sized businesses (SMBs) was $123,000 in 2019, while for enterprises it was $2.3 million.1 Therefore, it is important for organizations to implement appropriate security measures and contingency plans to prevent or mitigate the effects of a DDoS attack. References := The Future of Finance and the Global Economy: Facing Global … - IMF2; Kaspersky: Cost of a DDoS Attack1

 ISO/IEC 27017:2015 is a standard that provides guidelines for information security controls applicable to the provision and use of cloud services by providing additional implementation guidance for relevant controls specified in ISO/IEC 27002, as well as additional controls with implementation guidance that specifically relate to cloud services1. ISO/IEC 27017:2015 is designed to be used by organizations for cloud services that intend to select controls within the process of implementing an information security management system based on ISO/IEC 270011. ISO/IEC 27001 is a standard that specifies the requirements for establishing, implementing, maintaining and continually improving an information security management system within the context of the organization.

ISO/IEC 27002 is a standard that provides a code of practice for information security controls, but it does not provide specific guidance for cloud services. NIST SP 800-146 is a publication that provides an overview of cloud computing, its characteristics, service models, deployment models, and security considerations, but it does not provide a standard for selecting controls for cloud services. CSA CCM is a framework that provides detailed understanding of security concepts and principles that are aligned to the Cloud Security Alliance guidance in 13 domains, but it is not a standard that is based on ISO/IEC 27001. References:

ISO/IEC 27017:2015

[ISO/IEC 27001:2013]

[ISO/IEC 27002:2013]

[NIST SP 800-146]

[CSA CCM]

Reputational business impact refers to the effect on a company’s reputation and public perception following an incident or action. Option A is an example of reputational impact because the public dispute among high-level executives after a breach was reported reflects poorly on the company’s governance and crisis management capabilities. This public display of discord can erode stakeholder trust and confidence, potentially leading to a decline in the company’s market value, customer base, and ability to attract and retain talent.

References = The answer is derived from the understanding of reputational risk and its consequences on businesses, as discussed in various cloud auditing and security resources. Reputational impact is a key consideration in the governance of cloud operations, which is a topic covered in the CCAK curriculum1234.

 Supply chain agreements between a cloud service provider and cloud customers should, at a minimum, include audits, assessments, and independent verification of compliance certifications with agreement terms. This is because cloud services involve multiple parties in the supply chain, such as cloud providers, sub-providers, brokers, carriers, and auditors. Each party may have different roles and responsibilities in delivering the cloud services and ensuring their quality, security, and compliance. Therefore, it is important for the cloud customers to have visibility and assurance of the performance and compliance of the cloud providers and their sub-providers. Audits, assessments, and independent verification of compliance certifications are methods to evaluate the effectiveness of the controls and processes implemented by the cloud providers and their sub-providers to meet the agreement terms. These methods can help the cloud customers to identify any gaps or risks in the supply chain and to take corrective actions if needed. This is part of the Cloud Control Matrix (CCM) domain COM-04: Audit Assurance & Compliance, which states that "The organization should have a policy and procedures to conduct audits and assessments of cloud services and data to verify compliance with applicable regulatory frameworks, contractual obligations, and industry standards."12 References := CCAK Study Guide, Chapter 3: Cloud Compliance Program, page 551; Practical Guide to Cloud Service Agreements Version 2.02

Shadow IT refers to the use of IT resources (hardware, software, or cloud services) within an organization without the explicit approval of the IT or governance team. This practice is often flagged in cloud audits due to potential risks of compliance violations and security threats. The CCAK documentation from ISACA highlights the need for visibility and governance over all IT assets, with specific controls listed in the CSA CCM for Cloud Governance (GOV-09). Shadow IT poses risks to data security, compliance, and can introduce vulnerabilities, as systems are not subject to organizational standards and oversight.

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According to the ISACA Cloud Auditing Knowledge Certificate Study Guide, the cloud customer is the entity that retains accountability for the business outcome of the system or the processes that are supported by the cloud service1. The cloud customer is also responsible for ensuring that the cloud service meets the legal, regulatory, and contractual obligations that apply to the customer’s business context1. The cloud customer should also perform due diligence and risk assessment before selecting a cloud service provider, and establish a clear and enforceable contract that defines the roles and responsibilities of both parties1.

The cloud user is the entity that uses the cloud service on behalf of the cloud customer, but it is not necessarily accountable for the compliance of the service1. The cloud service provider is the entity that makes the cloud service available to the cloud customer, but it is not accountable for the compliance of the customer’s business context1. The certification authority (CA) is an entity that issues digital certificates to verify the identity or authenticity of other entities, but it is not accountable for the compliance of the cloud service2. References:

ISACA Cloud Auditing Knowledge Certificate Study Guide, page 10-11.

Certification authority - Wikipedia