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(Ed.)
The increase in cyberattacks against the
healthcare system, notably Electronic Health Records (EHRs)
breaches, has cost the healthcare providers more in recent
years. This situation is predicted to increase in the coming
years as the healthcare systems are proposing a consortium
EHRs repository. Due to this reason, it is crucial to deploy
solutions that can ensure the security of shared health records.
More specifically, maintaining the integrity and consistency of
shared EHRs becomes pertinent. In this on-going research, we
propose a blockchain-based solution that facilitates a scalable
and secured inter-healthcare EHRs exchange. These healthcare
systems maintain their records on individual private
blockchain networks, and the blockchains interact to exchange
patient health history based on request. The proposed solution
verifies the integrity and consistency of requests and replies
from other healthcare systems. It presents them in a standard
format that can be easily understood by different healthcare
nodes. The verification steps guard against malicious activities
on both stored and in transit EHRs from insider and outsider
threat actors. We evaluate the security analysis against
frequently encounter outsider and insider threats within a
healthcare system. The preliminary result shows that the
architecture can detect and prevent threat actors from
uploading compromising EHRs into the network and prevents
unauthorized retrieval of patient's information.
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