A Comprehensive Review of Cyber Kill Chain Models: Evolution, Applications, and Future Directions

Abstract

The cyber kill chain has emerged as a fundamental framework for understanding and defending against sophisticated cyber-attacks. Originating from military strategy, the cyber kill chain offers a structured approach to breaking down the stages of an attack, from the initial survey to achieving the attacker's objective. This review explores the evolution of various cyber kill chain models, beginning with the Lockheed Martin Cyber kill chain, which introduced a linear attack sequence, to more advanced frameworks like MITRE ATT&CK and the Unified Kill Chain, which address the complexity of modern threats such as Advanced Persistent Threats (APTs) and ransomware. Each model brings unique strengths in adaptability, threat intelligence, and incident response but also faces limitations in keeping pace with the rapidly changing cybersecurity landscape. This paper compares the efficacy of each model, discussing their practical applications in defensive cybersecurity, offensive security (red teaming), and industry-specific use cases, such as critical infrastructure and healthcare. Finally, the paper examines future research directions, focusing on integrating artificial intelligence, the need for real-time threat detection, and ethical considerations in leveraging these models for proactive cybersecurity strategies.