Blockchain-Based Secure Lost Data Retrieval and Recovery System Using Cyber Security Techniques

Abstract

Data loss has become a critical challenge in modern digital environments due to accidental deletion, hardware failure, software crashes, and increasing cyberattacks. Traditional data recovery solutions often lack strong security mechanisms and fail to guarantee the authenticity and integrity of restored data. This project presents a secure and reliable approach for lost data retrieval by integrating cryptographic techniques, decentralized storage, and blockchain-based verification. The system ensures that sensitive data remains protected while enabling efficient recovery without unauthorized manipulation. The proposed approach combines secure data storage, immutable logging, and cryptographic hash verification to provide a trusted recovery mechanism. By leveraging decentralized technologies and tamper-proof records, the framework ensures transparency, accountability, and data authenticity throughout the recovery lifecycle. This solution is particularly suitable for security-critical domains such as cloud services, healthcare, and financial systems, where data integrity and trust are essential.