Blockchain in cybersecurity by offering a decentralized and immutable way to store data, making it resistant to hacking and fraud. Blockchain’s transparent ledger ensures that once information is recorded, it cannot be altered without detection, enhancing data integrity. It provides secure digital identities, protects sensitive data, and prevents unauthorized access by using cryptographic algorithms. With blockchain, organizations can develop secure applications, improve encryption methods, and reduce risks associated with cyberattacks, particularly in areas like supply chain security and digital identity management.