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The CAE is responsible for monitoring progress selectively based on risk significance. Not every recommendation requires follow-up with the same intensity. Instead, the CAE should focus on high-risk issues and verify whether management has taken corrective actions.

Option A is too rigid and does not reflect risk-based prioritization. Option B is incorrect because the purpose of follow-up is not to revalidate audit issues but to ensure corrective actions were implemented. Option D incorrectly reverses the escalation order (unresolved issues must go from management → senior management → board).

A review of authentication should consider authentication policies, password management, audit trails, and management’s self-assessment or monitoring tools. These help determine whether identity verification controls are designed, implemented, and monitored effectively. Authentication policies define requirements for credentials, multifactor authentication, lockout, and access lifecycle. Password management and audit trails support accountability and detection of inappropriate access attempts. Control self-assessment tools may help management monitor compliance and control performance. Independent verification of data integrity and accuracy is important in IT auditing, but it relates more to data quality and processing integrity than authentication. Internal audit should focus authentication testing on identity proofing, credential strength, account management, logging, and monitoring. Therefore, Option A is correct.

Comprehensive and Detailed In-Depth Explanation:

Data privacy laws, such as the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA), emphasize restricting access to personally identifiable information (PII) to only those who require it for business purposes.

Option B (Data backup within 24 hours) is an IT best practice but is not a core requirement of privacy laws.

Option C (Approval for system updates) is a change management policy, unrelated to data privacy.

Option D (Insider trading restrictions) falls under corporate governance and securities regulations, not data privacy laws.

Thus, Option A is correct, as it aligns with legal requirements for protecting sensitive personal data.

E-commerce transactions involve multiple security layers to ensure the protection of customers ' sensitive financial information. The correct answer is D, as payment gateways serve as intermediaries that authorize online credit card transactions by securely transmitting the payment details to the bank or card networks for approval. Let’s examine each option carefully:

Option A: HTTP sites provide sufficient security to protect customers ' credit card information.

Incorrect. HyperText Transfer Protocol (HTTP) does not provide encryption, meaning that data transmitted over an HTTP connection can be intercepted by malicious actors. Instead, Secure HTTP (HTTPS), which uses Secure Sockets Layer (SSL) or Transport Layer Security (TLS), is required to encrypt the data.

IIA Reference: Internal auditors evaluating e-commerce security should verify that organizations use HTTPS for secure transactions. (IIA GTAG: Information Security Governance)

Option B: Web servers store credit cardholders ' information submitted for payment.

Incorrect. While web servers may temporarily process customer data, they should not store sensitive credit card information due to security risks. Instead, organizations follow the Payment Card Industry Data Security Standard (PCI DSS), which mandates secure storage and encryption protocols.

IIA Reference: IIA Standards recommend compliance with PCI DSS to protect sensitive payment information. (IIA Practice Guide: Auditing IT Governance)

Option C: Database servers send cardholders’ information for authorization in clear text.

Incorrect. Transmitting cardholder data in clear text is a severe security vulnerability. Secure encryption protocols such as SSL/TLS or tokenization must be used to protect data in transit.

IIA Reference: Internal auditors should ensure encryption measures are in place for financial transactions. (IIA GTAG: Auditing Cybersecurity Risk)

Option D: Payment gateways authorize credit card online payments.

Correct. Payment gateways act as secure intermediaries between merchants and payment processors, verifying the transaction details before authorization. This ensures a secure transaction by encrypting sensitive data before transmitting it for approval.

IIA Reference: IIA guidance on IT controls emphasizes the importance of secure payment processing through payment gateways. (IIA GTAG: Managing and Auditing IT Vulnerabilities)