Blockchain Security Framework for Ransomware in IOT Healthcare

Ransomware is a malicious software or program that encrypts the data on a hard disc and denies the users access to it unless an amount is paid. Ransomware attacks majorly target the majority of the organizations like financial institutions and healthcare organizations. Ransomware attacks are one of the scariest forms of cyber-attacks, and they are not limited to a particular industry or the nations. Blockchain is an untamperable technology, which is stronger, more secure and decentralized in nature. Characteristics of blockchain can provide additional security for ransomware detection and mitigation more effectively. In this paper, we introduce a new blockchain-based security framework to identify and protect the ransomware attacks for smart healthcare (briefly, BSFR-SH). The security analysis performed in this paper establishes the security of the proposed BSFR-SH against the ransomware attacks. Performance of BSFR-SH is much superior compared to other existing similar mechanisms because it has better accuracy and F1-score compared to other mechanisms under comparison.