The escalating sophistication of ransomware has catalyzed the transition from traditional encryption-focused attacks to more pernicious data exfiltration techniques. This research proposes a Decentralized Identity Verification System to combat the amplified threats of data theft and extortion. The system integrates blockchain technology to establish a resilient identity management framework reinforced by multi-factor authentication and smart contract-based access policies. By addressing fundamental vulnerabilities enabling unauthorized data access, the system proactively reduces attack surfaces vulnerable to ransomware infiltration. Simulated attack scenarios reflect promising security enhancement outcomes across metrics including prevention of data breaches, access control efficiency and system responsiveness to threats. While scope remains for continued innovation, this exploration highlights the synergetic potential of cryptography, access governance decentralization for reshaping data protection against contemporary cyber risks.

This study investigates an innovative method to combat ransomware, leveraging the New Technology File System (NTFS) spare space in Windows operating systems. The focus is on RansomCillin, a tool designed for effective data recovery after ransomware attacks. The methodology entailed a simulated environment using prevalent ransomware strains to assess RansomCillin’s file recovery success, time efficiency, data integrity, and system performance impact. Results showed RansomCillin’s high effectiveness in restoring encrypted files with minimal system disruption. Despite its promising performance, the study is limited to NTFS file systems and specific ransomware families, indicating the need for broader application in future research. This work suggests a paradigm shift in ransomware mitigation strategies, emphasizing proactive recovery and continuous adaptation to evolving cyber threats. RansomCillin’s development and testing highlight its potential as a practical solution in the ongoing battle against ransomware.