Medical Device Vulnerability Detection Using Classifier Hierarchies
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Solution Overview
Problem
Medical devices are vulnerable to cyber threats due to network connectivity, posing risks of disruption or exploitation that could lead to bodily harm or data leakage, necessitating a solution to identify and mitigate exploitable vulnerabilities.
Innovation Solution
A method and system using a classifier hierarchy to determine device attributes, analyze behavior and configuration, and perform mitigation actions based on a vulnerabilities database to detect and address exploitable vulnerabilities in medical devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If medical devices are connected to networks for monitoring and control, then the ability to monitor and control devices is improved, but the vulnerability to cyber threats increases
Solution Approach 1:
The system performs preliminary vulnerability assessment and exploitation condition determination before actual cyber threats can materialize. By analyzing device attributes, configuration data, and behavior patterns in advance, the system identifies potential vulnerabilities and determines exploitation conditions, allowing preventive mitigation actions to be taken before malicious entities can exploit the devices.
Solution Approach 2:
The vulnerability assessment system acts as an intermediary between the medical devices and potential cyber threats. It continuously monitors device attributes, configuration data, and behavior patterns, and intervenes by determining exploitation conditions and triggering mitigation actions, thereby protecting the devices without preventing their legitimate network connectivity and monitoring functions.
2Measurement precision
If comprehensive vulnerability assessment is performed on all device attributes, then detection accuracy is improved, but system complexity increases
Solution Approach 1:
The vulnerability assessment system is segmented into distinct functional modules: device attribute analysis, configuration data analysis, behavior pattern analysis, exploitation condition determination, and mitigation action generation. Each module processes specific aspects of vulnerability assessment independently, improving detection accuracy while managing system complexity through modular architecture. The classifier hierarchy further segments the assessment into multiple levels of granularity.
Solution Approach 2:
The system transitions from traditional single-dimensional vulnerability scanning to multi-dimensional assessment by analyzing device attributes, configuration data, and behavior patterns simultaneously. The classifier hierarchy adds another dimension by organizing vulnerabilities into hierarchical categories, enabling comprehensive detection without linearly increasing complexity.
3Reliability
If continuous monitoring of device behavior is implemented, then exploitable vulnerability detection is improved, but energy consumption increases
Solution Approach 1:
The system implements periodic behavior pattern analysis instead of continuous monitoring. It collects device behavior data over time intervals and performs analysis at periodic checkpoints, determining exploitation conditions based on accumulated patterns. This approach maintains detection reliability by capturing meaningful behavior changes while reducing energy consumption by avoiding constant monitoring and processing.
Data Source
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AI summary
A system and method for determining device attributes using a classifier hierarchy. The method includes: determining at least one exploitation condition for a medical device based on at least one first device attribute of the medical device and a plurality of second device attributes indicated in a vulnerabilities database, wherein the vulnerabilities database further indicates a plurality of known exploits for the plurality of second device attributes; analyzing behavior and configuration of the medical device to detect an exploitable vulnerability for the medical device, wherein the exploitable vulnerability is a behavior or configuration of the medical device which meets the at least one exploitation condition; and performing at least one mitigation action based on the exploitable vulnerability.