• Tim Abdiukov

In this paper, the authors introduce a unified cybersecurity maturity assessment framework that combines the NIST Cybersecurity Framework (CSF), ISO 27001, and CMMI in a manner that assesses the security posture of an organization across the domains of CISSP. The framework addresses fragmentation among current maturity frameworks, aligning risk-based (NIST), compliance-driven (ISO 27001), and process maturity (CMMI) models into an integrated approach. Its major innovations include a crosswalk matrix that maps 52 NIST subcategories to 114 ISO controls and 24 CMMI practices, a four-phase assessment process, and sector-specific adaptations. The framework was effective, as demonstrated by case studies in the healthcare, financial services, and manufacturing industries, which showed a 62 percent reduction in vulnerabilities and a 47 percent decrease in phishing attacks. Issues such as resource shortages and dynamic threats are brought up, as well as future insights, including maturity scoring driven by AI and zero-trust integration. The framework enables organizations to follow a logical methodology that facilitates benchmarking, prioritization, and enhancement of cybersecurity maturity.

Cybersecurity maturity assessment, Unified framework, NIST CSF, ISO 27001, CMMI, CISSP domains, Risk management, Compliance integration, Process maturity, Sector-specific security

"A Unified Framework for Cybersecurity Maturity Assessment Across CISSP Domains: Integrating NIST, ISO 27001, and CMMI for Holistic Security Posture Evaluation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 11, page no.f743-f753, November-2023, Available :http://www.jetir.org/papers/JETIR2311591.pdf

"A Unified Framework for Cybersecurity Maturity Assessment Across CISSP Domains: Integrating NIST, ISO 27001, and CMMI for Holistic Security Posture Evaluation", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 11, page no. ppf743-f753, November-2023, Available at : http://www.jetir.org/papers/JETIR2311591.pdf