A hospital implements a cryptographic system that creates a unique verifiable record whenever a physician modifies patient data in the EMR. The primary goal of this implementation is to:
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Protect sensitive patient information from unauthorized access
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Establish accountability for actions taken on patient records
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Verify the identity of physicians before system access
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Ensure patient data remains unaltered during transmission
Nonrepudiation is the security principle that ensures parties cannot deny the validity of their actions after the fact. In this scenario, the cryptographic system creates verifiable records that link physicians to their actions in the Electronic Medical Record (EMR) system, preventing them from later denying their involvement. This is a classic application of nonrepudiation.
The other security principles are not primarily addressed by this implementation:
Confidentiality protects information from unauthorized disclosure
Integrity ensures data remains unchanged and accurate during transmission or storage
Availability ensures systems and data are accessible when needed
Authentication verifies the identity of users before granting access
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ISC2 CISSP
Security and Risk Management
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