As digital transformation accelerates in the modern corporate environment, the importance of information assets is increasing, while security threats posed by insiders with legitimate access privileges are becoming more sophisticated. Although insider...
As digital transformation accelerates in the modern corporate environment, the importance of information assets is increasing, while security threats posed by insiders with legitimate access privileges are becoming more sophisticated. Although insider threats are more difficult to detect than external attacks and can cause significant damage, existing response methods have shown limitations due to fragmented approaches, such as reliance on isolated technical controls or formal policy establishment. In particular, the gap between security policies and actual operational technologies, as well as the oversight of organizational culture and human factors, are identified as major factors hindering effective threat management.
Therefore, this study proposes the "Integrated Security Policy Framework for Insider Threat Management (ISPF-ITM)" to effectively manage insider threats by organically combining technology, policy, and human factors. ISPF-ITM is based on a five-layer structure comprising Governance, Risk Management, Control, Monitoring, and Response, and adopts a holistic approach and proactive prevention as its core principles.
To verify the effectiveness of the proposed framework, this study designed a prototype architecture integrating UEBA (User and Entity Behavior Analytics), DLP (Data Loss Prevention), and SOAR (Security Orchestration, Automation, and Response) technologies. Based on this, a virtual FinTech corporate environment was established, and an empirical analysis was conducted by applying three key threat scenarios: malicious information exfiltration, negligent data exposure, and system sabotage.
The results confirmed that the ISPF-ITM-based prototype can resolve the "policy-implementation gap," a limitation of existing approaches, by organically performing the entire process from early threat detection to automated response. Furthermore, the analysis based on the MITRE ATT&CK framework demonstrated that multi-layered defense mechanisms operate effectively throughout the entire attack lifecycle.
In conclusion, this study suggests that insider threat management must operate as an integrated system involving policy, technology, and organizational culture, rather than mere technology adoption. The proposed framework is expected to provide practical guidelines for enterprises to establish insider threat management systems tailored to their environments and to build a proactive and active security posture.