Exam ISO-IEC-27001-Lead-Auditor Topic 2 Question 151 Discussion
Actual exam question for PECB's ISO-IEC-27001-Lead-Auditor exam
Question #: 151
Topic #: 2
Question #: 151
Topic #: 2
You are performing an ISMS audit at a residential nursing home (ABC) that provides healthcare services. The next step in your audit plan is to verify the information security of ABC's healthcare mobile app development, support, and lifecycle process. During the audit, you learned the organization outsourced the mobile app development to a professional software development company with CMMI Level 5, ITSM (ISO/IEC 20000-1), BCMS (ISO 22301) and ISMS (ISO/IEC 27001) certified.
The IT Manager presented the software security management procedure and summarised the process as following:
The mobile app development shall adopt "security-by-design" and "security-by-default" principles, as a minimum. The following security functions for personal data protection shall be available:
Access control.
Personal data encryption, i.e., Advanced Encryption Standard (AES) algorithm, key lengths: 256 bits; and Personal data pseudonymization.
Vulnerability checked and no security backdoor
You sample the latest Mobile App Test report, details as follows:
You ask the IT Manager why the organisation still uses the mobile app while personal data encryption and pseudonymization tests failed. Also, whether the Service Manager is authorised to approve the test.
The IT Manager explains the test results should be approved by him according to the software security management procedure.
The reason why the encryption and pseudonymisation functions failed is that these functions heavily slowed down the system and service performance. An extra 150% of resources are needed to cover this. The Service Manager agreed that access control is good enough and acceptable. That's why the Service Manager signed the approval.
You are preparing the audit findings. Select the correct option.
The IT Manager presented the software security management procedure and summarised the process as following:
The mobile app development shall adopt "security-by-design" and "security-by-default" principles, as a minimum. The following security functions for personal data protection shall be available:
Access control.
Personal data encryption, i.e., Advanced Encryption Standard (AES) algorithm, key lengths: 256 bits; and Personal data pseudonymization.
Vulnerability checked and no security backdoor
You sample the latest Mobile App Test report, details as follows:
You ask the IT Manager why the organisation still uses the mobile app while personal data encryption and pseudonymization tests failed. Also, whether the Service Manager is authorised to approve the test.
The IT Manager explains the test results should be approved by him according to the software security management procedure.
The reason why the encryption and pseudonymisation functions failed is that these functions heavily slowed down the system and service performance. An extra 150% of resources are needed to cover this. The Service Manager agreed that access control is good enough and acceptable. That's why the Service Manager signed the approval.
You are preparing the audit findings. Select the correct option.
Suggested Answer: D Vote an answer
The correct option is D. There is a nonconformity (NC). The Service Manager does not comply with the software security management procedure. (Relevant to clause 8.1, control A.8.30). The IT Manager should have approved the test results according to the software security management procedure, not the Service Manager. The Service Manager's decision to accept the failed security tests also violates the "security-by-design" and "security-by-default" principles that the organization adopted. The other options are either incorrect or irrelevant. The organization and developer did perform acceptance tests, but they failed (B, C). The Service Manager's decision to continue the service does not justify the nonconformity (A). Reference: 1: ISO/IEC 27001:2022, Information technology - Security techniques - Information security management systems - Requirements, Clause 8.1 \n2: PECB Certified ISO/IEC 27001 Lead Auditor Exam Preparation Guide, Domain 5: Conducting an ISO/IEC 27001 audit
by Irma at Jul 05, 2026, 03:18 AM
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