CISA Exam Dumps - Certified Information Systems Auditor

 Digital watermarks are hidden marks or codes that can be embedded into digital files, such as images, videos, audio, or documents. They can be used to identify the source, owner, or authorized user of the data, as well as to track any unauthorized copying or distribution of the data. Digital watermarks can help prevent data leakage by deterring potential leakers from sharing sensitive data or by providing evidence of data leakage if it occurs.

The other options are not as effective as digital watermarks in preventing data leakage. Ensuring that paper documents are disposed securely can reduce the risk of physical data leakage, but it does not address the digital data leakage that is more prevalent in today’s environment. Implementing an intrusion detection system (IDS) can help detect and respond to cyberattacks that may cause data leakage, but it does not prevent data leakage from insiders or authorized users who have legitimate access to the data. Verifying that application logs capture any changes made can help audit and investigate data leakage incidents, but it does not prevent them from happening in the first place.

 An employee is induced to reveal confidential IP addresses and passwords by answering questions over the phone. This is a social engineering attack method that exploits the trust or curiosity of the employee to obtain sensitive information that can be used to access or compromise the network. According to the web search results, social engineering is a technique that uses psychological manipulationto trick users into making security mistakes or giving away sensitive information1. Phishing, whaling, baiting, and pretexting are some of the common forms of social engineering attacks2. Social engineering attacks are often more effective and profitable than purely technical attacks, as they rely on human error rather than system vulnerabilities

The effectiveness of an organization’s security awareness program can be measured by capturing data on changes in the way people react to threats, such as the ability to recognize and avoid social engineering attacks1. An increase in the number of phishing emails reported by employees indicates that they are more aware of the signs and risks of phishing, and are more likely to take appropriate actions to prevent or mitigate the impact of such attacks23.

References

1: The Importance Of Measuring Security Awareness 2: Measuring the effectiveness of your security awareness program 3: How effective is security awareness training?

The necessary condition for effective risk management in IT governance is that risk evaluation is embedded in management processes. Risk evaluation is the process of comparing the results of risk analysis with risk criteria to determine whether the risk and/or its magnitude is acceptable or tolerable. Risk evaluation should be integrated into the management processes of planning, implementing, monitoring, and reviewing the IT activities and resources. This will ensure that risk management is aligned with the business objectives, strategies, and values, and that risk responses are timely, appropriate, and effective. References:

CISA Review Manual (Digital Version)

CISA Questions, Answers and ExplanationsDatabase

 An audit report of the controls by the service provider’s external auditor provides the best evidence that a third-party service provider’s information security controls are effective. An external auditor is an independent and objective party that can assess the design and operating effectiveness of the service provider’s information security controls based on established standards and criteria. An external auditor can also provide an opinion on the adequacy and compliance of the service provider’s information security controls, as well as recommendations for improvement.

Documentation of the service provider’s security configuration controls is a source of evidence that a third-party service provider’s information security controls are effective, but it is not the best evidence. Documentation of the security configuration controls can show the settings and parameters of the service provider’s information systems and networks, but it may not reflect the actual implementation and operation of the controls. Documentation of the security configuration controls may also be outdated, incomplete, or inaccurate.

An interview with the service provider’s information security officer is a source of evidence that a third-party service provider’s information security controls are effective, but it is not the best evidence. An interview with the information security officer can provide insights into the service provider’s information security strategy, policies, and procedures, but it may not verify the actual performance and compliance of the information security controls. An interview with the information security officer may also be biased, subjective, or misleading.

A review of the service provider’s policies and procedures is a source of evidence that a third-party service provider’s information security controls are effective, but it is not the best evidence. A review of the policies and procedures can show the service provider’s information security objectives, requirements, and guidelines, but it may not demonstrate the actual execution and enforcement of the information security controls. A review of the policies and procedures may also be insufficient, inconsistent, or outdated.

 The most efficient way to identify segregation of duties violations in a new system is to review a report of security rights in the system. Segregation of duties is a control principle that aims to prevent or detect errors, fraud, or abuse by ensuring that no single individual has the ability to perform incompatible or conflicting functions or activities within a system or process. A report of security rights in the system can provide a comprehensive and accurate overview of the roles, responsibilities, and access levels assigned to different users or groups in the system, and can help to identify any potential segregation of duties violations or risks. The other options are not as efficient as reviewing a report of security rights in the system, because they either rely on observation or testing rather than analysis, or they focus on existing rather than potential violations. References: CISA Review Manual (Digital Version)1, Chapter 5, Section 5.2.2