NeuroTrustMed is a leading medical technology company based in Seoul, South Korea.

NeuroTrustMed is a leading medical technology company based in Seoul, South Korea. The company specializes in developing AI-assisted neuroimaging solutions used in early diagnosis and treatment planning for neurological disorders. As a data-intensive company handling sensitive patient health records and medical research data, NeuroTrustMed places a strong emphasis on cybersecurity and regulatory compliance. The company has maintained an ISO/IEC 27001-certified ISMS for the past three years. It continuously reviews and improves its ISMS to address emerging threats, support innovation in medical diagnostics, and maintain stakeholder trust. As part of its commitment to continual improvement, NeuroTrustMed actively tracks potential nonconformities, performs root-cause analyses, implements corrective and preventive actions, and ensures all changes are documented and aligned with the company’s strategic objectives. When a new data protection regulation came into effect affecting cross-regional data handling, the information security team conducted a gap assessment between current policies and the new regulation. Then, it updated relevant documentation and processes to meet compliance. Following these revisions, NeuroTrustMed updated the ISMS documentation and added a new entry in the improvement register. The register, maintained in the form of a structured spreadsheet, included a unique change number, a description of the update, and a high-priority classification due to legal compliance, the dates of initiation and completion, and the sign-off by the information security manager. Around the same period, during a scheduled management review, the information security team also identified a pattern of onboarding errors. While these had not resulted in any data breaches, they posed a risk of unauthorized access. In response, the onboarding procedure was revised and an automated verification step was added to ensure accuracy before access is granted. To understand the underlying cause, the team collected data on the provisioning process. They analyzed process logs, interviewed onboarding staff, and traced access errors back to a misconfigured step in the HR-to-IT handover workflow. The team validated this finding through test cases before implementing any changes. Once confirmed, the information security team documented the nonconformity in the ISMS log. The documentation included a description of the issue, impacted systems, affected users, and a brief risk assessment of potential consequences related to access management. Based on the scenario above, answer the following question.

What type of change caused the ISMS update at NeuroTrustMed?