A CISA is evaluating the access controls for a critical financial application. The application processes high-value transactions and is accessed by different user roles (e.g., data entry, approvers, auditors). The organization's policy mandates segregation of duties (SoD). Which of the following is the MOST effective method to ensure that SoD is properly enforced within the application?
- AUtilizing an automated SoD analysis tool to identify and remediate conflicting access assignments.
- BRelying on strong password policies and multi-factor authentication (MFA) for all users.
- CImplementing role-based access control (RBAC) and regularly reviewing role assignments.
- DConducting monthly user access reviews and disabling dormant accounts promptly.
Show answer & explanationAnswer & explanation
Correct answer: A. Utilizing an automated SoD analysis tool to identify and remediate conflicting access assignments.
While RBAC, strong passwords, and regular access reviews are crucial components of identity and access management, the MOST effective method specifically for ensuring SoD enforcement, especially in a complex application with multiple roles and high-value transactions, is an automated SoD analysis tool. Such tools can proactively identify and flag conflicting access assignments that violate SoD principles, which manual reviews often miss due to complexity.
Why the other options are wrong
- B. Strong passwords and MFA enhance authentication but do not directly address the authorization aspect of SoD.
- C. RBAC is a mechanism to implement SoD, but without specific SoD checks, it doesn't guarantee enforcement against conflicting roles.
- D. User access reviews are reactive and often manual, making them less effective than automated tools for complex SoD enforcement.
Automated SoD Analysis
Software tools that analyze user roles, permissions, and transactions within systems to identify and flag violations of segregation of duties principles, preventing or detecting unauthorized or conflicting access combinations.
- Proactive detection of SoD conflicts.
- Scales to complex environments.
- Reduces manual review effort and errors.
Memory trick: Don't let one person hold all the keys to the kingdom; use a smart guard.