Monitoring Module for Computer System Manipulation Protection
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Solution Overview
Problem
Computer systems, particularly IoT devices, are vulnerable to tampering and functional anomalies due to networking interfaces, which can lead to attacks such as buffer overflow and unauthorized control, making it difficult to detect and counter malicious interventions.
Innovation Solution
A system with a monitoring module that uses encrypted communication and key management to securely access and respond to system state requests, preventing unauthorized access and spoofing, and includes a security module to filter data based on sender, receiver, and data format to prevent attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If networking interfaces are added to enable IoT connectivity, then adaptability and communication capability are improved, but attack surface and vulnerability to manipulation increase
Solution Approach 1:
The system separates the monitoring function into an independent monitoring module that operates separately from the main control system. This module has its own memory space and can independently monitor system states without being affected by attacks on the main software, thus maintaining security while enabling networking capabilities.
Solution Approach 2:
The monitoring module acts as an intermediary between the control system and external monitoring entities. It provides a secure interface that allows system state information to be accessed without exposing the internal system to direct attacks, thereby reducing the attack surface while maintaining adaptability.
2Reliability
If software is designed with comprehensive validation to prevent attacks, then security is improved, but device complexity and processing overhead increase
Solution Approach 1:
The monitoring function is extracted from the main control software into a separate monitoring module. This extraction removes the complexity of comprehensive validation from the main software while maintaining security through the dedicated monitoring module that independently verifies system states.
Solution Approach 2:
The monitoring module autonomously monitors system states and detects anomalies without requiring complex validation logic in the main software. It self-manages the security monitoring function, reducing the overall software complexity while maintaining high security standards.
3Reliability
If memory allocation is strictly enforced according to specifications, then buffer overflow attacks are prevented, but flexibility in data handling is reduced
Solution Approach 1:
The monitoring module is configured in advance with knowledge of valid system states and expected data formats. This preliminary configuration allows it to enforce memory allocation boundaries and detect buffer overflow attempts without requiring rigid validation logic that would reduce data handling flexibility in the main software.
Data Source
AI summary
A system is provided for protecting a computer system and/or control system against manipulation and functional anomalies. The system includes a monitoring module, which has at least a first interface, a second interface, and at least one memory. The system is configured to receive information characterizing the system state of the computer system and/or control system via the first interface, receive an encrypted request for system state via the second interface and decrypt it using a request key stored in the memory, and generate a response to the request from at least a portion of the information received via the first interface.The system is also configured to encrypt the response with a response keydetermined using the request and output it via the second interface,determine a new request key which is a shared secret also accessible to the sender of the request, and store this new request key in the memory.