Overview
ISO/IEC TR 5891:2024 is an international technical report published by ISO and IEC that surveys and summarizes current hardware monitoring technologies for hardware security assessment. The focus is on core processing hardware in von Neumann systems, such as CPUs, MCUs, and SoCs, excluding memory and single-input/single-output devices. This standard provides valuable insights into how modern runtime hardware monitoring methods contribute to information security, cybersecurity, and privacy protection.
The document reviews both academic research and industrial applications, classifies existing monitoring technologies by applied area, carrier type, target entity, objective pattern, and deployment method, and discusses how these technologies support state-of-the-art hardware security assessment. The scope is limited to post-silicon, runtime hardware, rather than design-phase hardware.
Key Topics
1. Hardware Monitoring Methods
- Surveys academic research and industry solutions
- Classifies monitoring technologies by:
- Applied area (e.g., security, debugging, performance)
- Carrier type (middleware, software, hardware-assisted)
- Target entity (IP cores, processing units)
- Objective pattern (behavior, information content)
- Deployment method (intrusive/non-intrusive, synchronous/asynchronous)
2. Security Assessment Integration
- Explains the use of hardware monitoring to identify abnormal behavior, vulnerabilities, and hardware Trojans
- Discusses runtime hardware-behavior-based security and its relevance for advanced security monitoring
3. Relationship to Other Standards
- Complements standards such as ISO/IEC 15408, ISO/IEC TS 30104, and ISO/IEC 19790 by focusing on monitoring during the operational (post-silicon) phase rather than purely on physical boundaries or design
- Addresses gaps in traditional security evaluation approaches by introducing runtime monitoring techniques
4. Practical Monitoring Purposes
- Security: Real-time detection of anomalies, attacks, and violations of expected behavior
- Debugging: Assists in post-silicon validation, capturing detailed trace information for fault localization and analysis
- Performance tuning: Uses on-chip counters and system metrics to evaluate and optimize performance aspects
- System reliability: Identifies faults and supports quality of service through monitoring physical parameters and system events
Applications
Hardware monitoring technologies according to ISO/IEC TR 5891:2024 have broad practical value, including:
- Hardware Security Assessment: Leveraging continuous monitoring to detect and respond to hardware Trojans, vulnerabilities, and runtime attacks in complex processing environments.
- Compliance and Audit: Enabling organizations to meet regulatory and best-practice requirements for security and privacy protection through monitored evidence.
- Debugging and Validation: Facilitating advanced debugging and post-silicon validation, identifying errors that may not have surfaced during pre-silicon testing.
- Performance Monitoring: Enhancing system performance by tracking hardware events, enabling optimization and early detection of bottlenecks or erratic behavior.
- System Reliability and Availability: Supporting resilience strategies by recording runtime metrics, detecting early signs of component failure, and ensuring consistent operations in critical infrastructure.
These applications are highly relevant for industries such as data centers, embedded systems, cloud computing, and critical infrastructure, where hardware security, operational transparency, and continuous monitoring are crucial.
Related Standards
Implementers and stakeholders may also refer to the following related standards when deploying or assessing hardware monitoring technologies for security purposes:
- ISO/IEC 15408: Evaluation criteria for IT security, foundational for vulnerability assessment in IT products and systems.
- ISO/IEC TS 30104: Security techniques-Physical security attacks, mitigation, and requirements.
- ISO/IEC 19790: Security requirements for cryptographic modules.
- ISO/IEC 17825: Testing methods for the detection of physical attacks.
ISO/IEC TR 5891:2024 provides a valuable survey and classification framework that supports the practical deployment and evaluation of hardware monitoring in support of robust hardware security assessment and system integrity. By aligning with this standard, organizations can improve cybersecurity posture, as well as information security and privacy protection, for core hardware components.