The Cloud Security Alliance (CSA) Cloud Controls Matrix (CCM) is the best tool to perform cloud security control audits, as it is a comprehensive framework that provides organizations with a detailed understanding of security concepts and principles that are aligned to the cloud model. The CCM covers 16 domains of cloud security, such as data security, identity and access management, encryption and key management, incident response, and audit assurance and compliance. The CCM also maps to other standards, such as ISO 27001, NIST SP 800-53, PCI DSS, COBIT, and GDPR, to facilitate compliance and assurance activities1.
The General Data Protection Regulation (GDPR) is not a tool, but rather a regulation that aims to protect the personal data and privacy of individuals in the European Union (EU) and the European Economic Area (EEA). The GDPR imposes strict requirements on organizations that process personal data of individuals in these regions, such as obtaining consent, ensuring data security, reporting breaches, and respecting data subject rights. The GDPR is relevant for cloud security audits, but it is not a comprehensive framework that covers all aspects of cloud security2.
The Federal Information Processing Standard (FIPS) 140-2 is not a tool, but rather a standard that specifies the security requirements for cryptographic modules used by federal agencies and other organizations. The FIPS 140-2 defines four levels of security, from Level 1 (lowest) to Level 4 (highest), based on the design and implementation of the cryptographic module. The FIPS 140-2 is important for cloud security audits, especially for organizations that handle sensitive or classified information, but it is not a comprehensive framework that covers all aspects of cloud security3.
ISO 27001 is a standard that specifies the requirements for establishing, implementing, maintaining and continually improving an information security management system (ISMS). An ISMS is a systematic approach to managing information security risks and ensuring the confidentiality, integrity and availability of information assets. ISO 27001 is relevant for cloud security audits, as it provides a framework for assessing and improving the security posture of an organization. However, ISO 27001 does not provide specific guidance or controls for cloud services, which is why ISO 27017:2015 was developed as an extension to ISO 27001 for cloud services4. Reference := Cloud Controls Matrix | Cloud Security Alliance General Data Protection Regulation – Wikipedia FIPS PUB 140-2 – NIST ISO/IEC 27001:2013(en), Information technology ? Security techniques …

Regression testing is a type of software testing that confirms that a recent program or code change has not adversely affected existing features1 It involves re-running functional and non-functional tests to ensure that previously developed and tested software still performs as expected after a change2 Regression testing is suitable for large code sets in environments where time to completion is critical, as it can help detect and prevent defects, improve quality, and enable faster delivery of secure software. Regression testing can be automated to reduce manual errors, speed up feedback loops, and increase efficiency and reliability3 The other options are not correct because:
* Option A is not correct because parallel testing is a type of software testing that involves testing multiple applications or subsystems concurrently to reduce the test time4 Parallel testing does not necessarily ensure the integration of security testing, as it depends on the quality and coverage of the test cases and scenarios used for each application or subsystem. Parallel testing may also introduce challenges such as synchronization, coordination, and communication among the testers and developers5
* Option B is not correct because full application stack unit testing is a type of software testing that involves testing individual units or components of an application in isolation to verify their functionality, logic, interfaces, and performance6 Full application stack unit testing does not ensure the integration of security testing, as it does not consider the interactions and dependencies among the units or components, or the behavior of the application as a whole. Unit testing is typically performed by developers at an early stage of the software development life cycle, and may not cover all the security aspects or requirements of the application7
* Option C is not correct because functional verification is a type of software testing that involves verifying that the software meets the specified requirements and satisfies the user needs. Functional verification does not ensure the integration of security testing, as it does not focus on how the software is designed or configured, or how it handles malicious or unexpected inputs. Functional verification is typically performed by quality assurance teams at a later stage of the software development life cycle, and may not detect all the security vulnerabilities or risks of the software.
References: 1: Wikipedia. Regression testing – Wikipedia. [Online]. Available: 3. [Accessed: 14-Apr-
2023]. 2: Katalon. What is Regression Testing? Definition, Tools, Examples – Katalon.
[Online]. Available: 4. [Accessed: 14-Apr-2023]. 3: BMC Software. Shift Left Testing: What, Why & How To Shift Left – BMC Software | Blogs. [Online]. Available: 3. [Accessed: 14-Apr-2023]. 4: Guru99. What is Parallel Testing? with Example – Guru99. [Online]. Available: . [Accessed: 14-Apr-2023]. 5: LambdaTest.
Parallel Testing In Selenium WebDriver | LambdaTest Blog. [Online]. Available: . [Accessed: 14-Apr-
2023]. 6: Guru99. What is Unit Testing? Types & Examples – Guru99. [Online]. Available: . [Accessed: 14- Apr-2023]. 7: Software Testing Help. Unit Testing Vs Integration Testing: Difference Between These Two – SoftwareTestingHelp.com Blog. [Online]. Available: . [Accessed: 14-Apr-2023]. : Guru99. What is Functional Testing? Types & Examples – Guru99. [Online]. Available: . [Accessed: 14-Apr-2023]. : Software Testing Help. Functional Testing Vs Non-Functional Testing – SoftwareTestingHelp.com Blog. [Online].
Available: . [Accessed: 14-Apr-2023].

DevSecOps is an approach that integrates security practices into every phase of the software development lifecycle. It emphasizes the incorporation of security from the beginning, rather than as an afterthought, and utilizes automation to ensure security measures are consistently applied throughout the development process. This method allows for early detection and resolution of security issues, making it an essential practice for organizations with mature security programs and cloud adoption.
Reference = The definition and best practices of DevSecOps are well-documented in resources provided by leading industry authorities such as Microsoft1 and IBM2, which describe DevSecOps as a framework that automates the integration of security into the software development lifecycle.

Explanation
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 27001, which is the international standard for information security management systems1. ISO/IEC 27017:2015 can help organizations to establish, implement, maintain and continually improve their information security in the cloud environment, as well as to demonstrate compliance with contractual and legal obligations1.
ISO/IEC 27002 is a code of practice for information security controls that provides best practice recommendations on information security management for use by those who are responsible for initiating, implementing or maintaining information security management systems2. However, ISO/IEC 27002 does not provide specific guidance for cloud services, which is why ISO/IEC 27017:2015 was developed as an extension to ISO/IEC 27002 for cloud services1.
Cloud Security Alliance (CSA) Cloud Controls Matrix (CCM) is a set of security controls that provides organizations with a detailed understanding of security concepts and principles that are aligned to the cloud model. The CCM is not a standard, but rather a framework that can be used to assess the overall security risk of a cloud provider. The CCM can also be mapped to other standards, such as ISO/IEC 27001 and ISO/IEC
27017:2015, to facilitate compliance and assurance activities.
NIST SP 800-146 is a publication from the National Institute of Standards and Technology (NIST) that provides an overview of cloud computing, its characteristics, service models, deployment models, benefits, challenges and considerations. NIST SP 800-146 is not a standard, but rather a reference document that can help organizations to understand the basics of cloud computing and its implications for information security.
NIST SP 800-146 does not provide specific guidance or controls for cloud services, but rather refers to other standards and frameworks, such as ISO/IEC 27001 and CSA CCM, for more detailed information on cloud security. References := ISO/IEC 27017:2015 – Information technology – Security techniques …
ISO/IEC 27017:2015(en), Information technology ? Security techniques …
ISO 27017 Certification – Cloud Security Services | NQA
An introduction to ISO/IEC 27017:2015 – 6clicks
ISO/IEC 27017:2015 – Information technology – Security techniques …
[Cloud Controls Matrix | Cloud Security Alliance]
[NIST Cloud Computing Synopsis and Recommendations]

When applying the Top Threats Analysis methodology following an incident, the scope of the technical impact identification step is to determine the impact on confidentiality, integrity, and availability of the information system. The Top Threats Analysis methodology is a framework developed by the Cloud Security Alliance (CSA) to help organizations identify, analyze, and mitigate the most critical threats to cloud computing. The methodology consists of six steps: threat identification, threat analysis, technical impact identification, business impact analysis, risk assessment, and risk treatment12.
The technical impact identification step is the third step of the methodology, and it aims to assess how the incident affected the security properties of the information system, namely confidentiality, integrity, and availability. Confidentiality refers to the protection of data from unauthorized access or disclosure. Integrity refers to the protection of data from unauthorized modification or deletion. Availability refers to the protection of data and services from disruption or denial. The technical impact identification step can help organizations to understand the severity and extent of the incident and its consequences on the information system12.
The other options are not within the scope of the technical impact identification step. Option A, determine the impact on the controls that were selected by the organization to respond to identified risks, is not within the scope because it is part of the risk treatment step, which is the sixth and final step of the methodology. Option C, determine the impact on the physical and environmental security of the organization, excluding informational assets, is not within the scope because it is not related to the information system or its security properties. Option D, determine the impact on the financial, operational, compliance, and reputation of the organization, is not within the scope because it is part of the business impact analysis step, which is the fourth step of the methodology. References :=
* Top Threats Analysis Methodology – CSA1
* Top Threats Analysis Methodology – Cloud Security Alliance

A distributed denial of service (DDoS) attack renders the customer’s cloud inaccessible for 24 hours is an example of availability technical impact. Availability is the protection of data and services from disruption or denial, and it is one of the three dimensions of information security, along with confidentiality and integrity.
Availability technical impact refers to the extent of damage or harm that a threat can cause to the availability of the information system and its components, such as servers, networks, applications, and data. A DDoS attack is a malicious attempt to overwhelm a target system with a large volume of traffic or requests from multiple sources, making it unable to respond to legitimate requests or perform its normal functions. A DDoS attack can cause a significant availability technical impact by rendering the customer’s cloud inaccessible for a prolonged period of time, resulting in loss of productivity, revenue, customer satisfaction, and reputation. References := CCAK Study Guide, Chapter 4: A Threat Analysis Methodology for Cloud Using CCM, page 81; What is a DDoS Attack? | Cloudflare

According to the definition of audit scope, it is the extent and boundaries of an audit, which include the audit objectives, the activities and documents covered, the time period and locations audited, and the related activities not audited1 Audit scope determines how deeply an audit is performed and may vary depending on the type of audit. Audit scope can also mean the examination of a person or the inspection of the books, records, or accounts of a person for tax purposes1 The most important audit scope document when conducting a review of a cloud service provider is the processes and systems to be audited. This document defines the specific areas and aspects of the cloud service provider that will be subject to the audit, such as the cloud service delivery model, the cloud deployment model, the cloud security domains, the cloud service level agreements, the cloud governance framework, etc2 The processes and systems to be audited document also helps to identify the risks, controls, criteria, and objectives of the audit, as well as the roles and responsibilities of the auditors and the auditees3 The processes and systems to be audited document is essential for planning and performing an effective and efficient audit of a cloud service provider.
The other options are not correct because:
Option B is not correct because the updated audit work program is not an audit scope document, but rather an audit planning document. The audit work program is a set of detailed instructions or procedures that guide the auditor in conducting the audit activities4 The audit work program is based on the audit scope, but it does not define it. The audit work program may also change during the course of the audit, depending on the findings and issues encountered by the auditor4 Option C is not correct because the documentation criteria for the audit evidence is not an audit scope document, but rather an audit quality document. The documentation criteria for the audit evidence is a set of standards or guidelines that specify what constitutes sufficient and appropriate evidence to support the auditor’s conclusions and opinions5 The documentation criteria for the audit evidence is derived from the audit scope, but it does not determine it. The documentation criteria for the audit evidence may also vary depending on the nature and source of the evidence collected by the auditor5 Option D is not correct because the testing procedure to be performed is not an audit scope document, but rather an audit execution document. The testing procedure to be performed is a set of steps or actions that describe how to test or verify a specific control or process within the cloud service provider6 The testing procedure to be performed is aligned with the audit scope, but it does not establish it. The testing procedure to be performed may also differ depending on the type and level of testing required by the auditor6

Transparent data encryption (TDE) is used for data and log files at rest. This means that TDE encrypts the database files on the disk and decrypts them when they are read into memory. TDE protects the data from unauthorized access or theft if the physical media, such as drives or backup tapes, are stolen or lost. TDE does not encrypt data across communication channels, data currently being processed, or data in random access memory (RAM). These types of data require different encryption methods, such as SSL/TLS, column encryption, or memory encryption12.
Reference:
Transparent data encryption (TDE) – SQL Server | Microsoft Learn
Transparent Data Encryption – Oracle Help Center

According to the ISACA Cloud Auditing Knowledge Certificate Study Guide, the auditor should report the findings to the management of the organization being audited, as they are the primary stakeholders and decision makers for the audit. The management is responsible for ensuring that the cloud service provider meets the contractual obligations and service level agreements, as well as the security and compliance requirements of the community cloud. The auditor should also communicate with the cloud service provider and other relevant parties, such as regulators or customers, as appropriate, but the final report should be addressed to the management of the organization being audited. Reference: ISACA Cloud Auditing Knowledge Certificate Study Guide, page 17

A SOC2 Type 2 report can best help an auditor to get information about the operating effectiveness of controls addressing privacy, availability, and confidentiality of a service organization. A SOC2 Type 2 report is an internal control report that examines the security, availability, processing integrity, confidentiality, and privacy of a service organization’s system and data over a specified period of time, typically 3-12 months. A SOC2 Type 2 report is based on the AICPA Trust Services Criteria and provides an independent auditor’s opinion on the design and operating effectiveness of the service organization’s controls. A SOC2 Type 2 report can help an auditor to assess the risks and challenges associated with outsourcing services to a cloud provider and to verify that the provider meets the relevant compliance requirements and industry standards.
12 References := CCAK Study Guide, Chapter 5: Cloud Auditing, page 971; SOC 2 Type II Compliance:
Definition, Requirements, and Why You Need It2

The shift-left concept of code release cycles is a practice that aims to integrate testing, quality, and performance evaluation early in the software development life cycle, often before any code is written. This helps to find and prevent defects, improve quality, and enable faster delivery of secure software. One of the key aspects of the shift-left concept is the incorporation of automation to identify and address software code problems early, such as using continuous integration, continuous delivery, and continuous testing tools. Automation can help reduce manual errors, speed up feedback loops, and increase efficiency and reliability123 The other options are not correct because:
* Option A is not correct because large entities with slower release cadences and geographically dispersed systems are more likely to face challenges in adopting the shift-left concept, as they may have more complex and legacy systems, dependencies, and processes that hinder agility and collaboration. The shift-left concept requires a culture of continuous improvement, experimentation, and learning that may not be compatible with traditional or siloed organizations4
* Option C is not correct because a waterfall model is the opposite of the shift-left concept, as it involves sequential phases of development, testing, and deployment that are performed late in the software development life cycle. A waterfall model does not allow for early detection and correction of defects, feedback, or changes, and can result in higher costs, delays, and risks5
* Option D is not correct because maturity of start-up entities with high-iteration to low-volume code commits is not a sign of the shift-left concept, but rather a sign of the agile or lean software development methodologies. These methodologies focus on delivering value to customers by delivering working software in short iterations or sprints, with frequent feedback and adaptation. While these methodologies can support the shift-left concept by enabling faster testing and delivery cycles, they are not equivalent or synonymous with it6 References: 1: AWS. What is DevSecOps? – Developer Security Operations Explained – AWS.
[Online]. Available: 4. [Accessed: 14-Apr-2023]. 2: Dynatrace. Shift left vs shift right: A DevOps mystery solved – Dynatrace news. [Online]. Available: 2. [Accessed: 14-Apr-2023]. 3: BMC Software. Shift Left Testing: What, Why & How To Shift Left – BMC Software | Blogs. [Online]. Available: 3. [Accessed:
14-Apr-2023]. 4: GitLab. How to shift left with continuous integration | GitLab.
[Online]. Available: 4. [Accessed: 14-Apr-2023]. 5: DZone. DevOps and The Shift-Left Principle – DZone.
[Online]. Available: 5. [Accessed: 14-Apr-2023]. 6: Devopedia. Shift Left – Devopedia. [Online]. Available: 6.
[Accessed: 14-Apr-2023].

A SOC2 Type 2 report can best help an auditor to get information about the operating effectiveness of controls addressing privacy, availability, and confidentiality of a service organization. A SOC2 Type 2 report is an internal control report that examines the security, availability, processing integrity, confidentiality, and privacy of a service organization’s system and data over a specified period of time, typically 3-12 months. A SOC2 Type 2 report is based on the AICPA Trust Services Criteria and provides an independent auditor’s opinion on the design and operating effectiveness of the service organization’s controls. A SOC2 Type 2 report can help an auditor to assess the risks and challenges associated with outsourcing services to a cloud provider and to verify that the provider meets the relevant compliance requirements and industry standards.12 Reference := CCAK Study Guide, Chapter 5: Cloud Auditing, page 971; SOC 2 Type II Compliance: Definition, Requirements, and Why You Need It2

The objective that is most appropriate to measure the effectiveness of password policy is newly created account credentials satisfy requirements. This is because password policy is a set of rules and guidelines that define the characteristics and usage of passwords in a system or network. Password policy aims to enhance the security and confidentiality of the system or network by preventing unauthorized access, data breaches, and identity theft. Therefore, the best way to evaluate the effectiveness of password policy is to check whether the newly created account credentials meet the requirements of the policy, such as length, complexity, expiration, and history. This objective can be measured by conducting periodic audits, reviews, or tests of the account creation process and verifying that the passwords comply with the policy standards. This is part of the Cloud Control Matrix (CCM) domain IAM-02: User ID Credentials, which states that “The organization should have a policy and procedures to manage user ID credentials for cloud services and data.”1 References := CCAK Study Guide, Chapter 4: A Threat Analysis Methodology for Cloud Using CCM, page 76

The Egregious 11 refers to a list of top threats to cloud computing, as published by the Cloud Security Alliance (CSA) in 2019. The CSA is a leading organization dedicated to defining standards, certifications and best practices to help ensure a secure cloud computing environment. The Egregious 11 report ranks the most critical and pressing cloud security issues, such as data breaches, misconfigurations, insufficient identity and access management, and account hijacking. The report also provides recommendations for security, compliance, risk and technology practitioners to mitigate these threats. The Egregious 11 is based on a survey of industry experts and a review of current literature and media reports. The report is intended to raise awareness of the risks and challenges associated with cloud computing and promote strong security practices.12 References := CCAK Study Guide, Chapter 5: Cloud Auditing, page 961; CSA Top Threats to Cloud Computing: Egregious 11

The correct answer is C. Data input and output integrity routines (i.e., reconciliation and edit checks) are controls that can be implemented for application interfaces and databases to prevent manual or systematic processing errors, corruption of data, or misuse. This is stated in the Cloud Controls Matrix (CCM) control AIS-03: Data Integrity123, which is part of the Application & Interface Security domain. The CCM is a cybersecurity control framework for cloud computing that can be used by cloud customers to build an operational cloud risk management program.
The other options are not directly related to the question. Option A refers to the CCM control AIS-02:
Customer Access Requirements2, which addresses the security, contractual, and regulatory requirements for customer access to data, assets, and information systems. Option B refers to the CCM control AIS-04: Data Security / Integrity2, which establishes policies and procedures to support data security across multiple system interfaces, jurisdictions, and business functions. Option D refers to the CCM control AIS-01: Application Security2, which requires applications and programming interfaces (APIs) to be designed, developed, deployed, and tested in accordance with leading industry standards (e.g., OWASP for web applications).
References :=
* Certificate of Cloud Auditing Knowledge (CCAK) Study Guide, Chapter 5: Cloud Assurance Frameworks
* What is the Cloud Controls Matrix (CCM)? – Cloud Security Alliance4
* AIS-03: Data Integrity – CSF Tools – Identity Digital1
* AIS: Application & Interface Security – CSF Tools – Identity Digital2
* PR.DS-6: Integrity checking mechanisms are used to verify software … – CSF Tools – Identity Digital

The organization (client) is accountable for the use of a cloud service. Accountability in cloud computing is the responsibility of cloud service providers and other parties in the cloud ecosystem to protect and properly process the data of their clients and users. However, accountability ultimately rests with the organization (client) that uses the cloud service, as it is the data owner and controller. The organization (client) has to ensure that the cloud service provider and its suppliers meet the agreed-upon service levels, security standards, and regulatory requirements. The organization (client) also has to perform due diligence and oversight on the cloud service provider and its suppliers, as well as to comply with the shared responsibility model, which defines how the security and compliance tasks and obligations are divided between the cloud service provider and the organization (client)123.
The other options are not correct. Option A, the cloud access security broker (CASB), is incorrect because a CASB is a software tool or service that acts as an intermediary between cloud users and cloud service providers, providing visibility, data security, threat protection, and compliance. A CASB does not use the cloud service, but facilitates its secure and compliant use4. Option B, the supplier, is incorrect because a supplier is a third-party entity that provides services or products to the cloud service provider, such as infrastructure, software, hardware, or support. A supplier does not use the cloud service, but supports its delivery5. Option C, the cloud service provider, is incorrect because a cloud service provider is a company that provides cloud computing services to the organization (client). A cloud service provider does not use the cloud service, but offers it to the organization (client)6. References :=
* Accountability Issues in Cloud Computing (5 Step … – Medium1
* Shared responsibility in the \uE000cloud\uE001 – Microsoft Azure2
* Who Is Responsible for Cloud Security? – Security Intelligence3
* What is CASB? – Cloud Security Alliance4
* Cloud Computing: Auditing Challenges – ISACA5
* What is Cloud Provider? – Definition from Techopedia