The document discusses how blockchain can enhance cyber security. It outlines several types of common cyber attacks and how blockchain could help address them. Blockchain could provide a decentralized storage medium, more secure DNS, and secure edge device authentication through identity verification. Additional benefits include distributing public keys, mitigating DDoS attacks, and verifying software downloads. The future of blockchain-based cyber security is promising as it ensures data privacy and security in a way that keeps pace with increasing cybercrime.