Problem
Research questions and friction points this paper is trying to address.
logic vulnerabilities
blockchain-enabled IoT
contract and device layers
multi-agent
heterogeneous graph
Detecting Logic Vulnerabilities Across the Contract and Device Layers of Blockchain-Enabled IoT With Multi-Agent Heterogeneous Graph Attention
🤖 AI Summary
本文针对区块链物联网系统中的逻辑漏洞问题，提出了一种跨层多代理异构图注意力框架MA-HGAT，以统一架构支持不同安全任务。
📝 Abstract
Blockchain-enabled Internet of Things (IoT) systems integrate smart contracts with embedded devices to support decentralized device management and access control. Their security therefore depends jointly on the logic of on-chain contracts and off-chain device firmware. Logic flaws in either layer can violate the same system invariants, such as unauthorized access, improper state changes, or unguarded privileged operations. Existing approaches rely on contract analysis, firmware analysis, and graph-based vulnerability detection. However, these methods typically focus on a single layer or artifact and often depend on predefined vulnerability patterns, emulation fidelity, or homogeneous representations that obscure security-relevant component roles. They also lack a unified architecture that supports different security tasks while remaining deployable on resource-constrained gateways. To address these limitations, we extend MA-HGAT into a cross-layer multi-agent heterogeneous graph attention framework that models contracts, firmware artifacts, device fleets, and transaction streams with a unified four-role, nine-relation schema. Role-aligned agents exchange heterogeneous evidence through cross-attention, while graph-, link-, and node-level heads support multiple detection tasks and a role-based gateway--cloud partition enables lightweight edge inference. MA-HGAT thus provides a unified and deployable framework for detecting logic vulnerabilities across the contract and device layers of blockchain-enabled IoT systems.
Innovation
Methods, ideas, or system contributions that make the work stand out.
Multi-Agent Heterogeneous Graph Attention
Cross-Layer Vulnerability Detection
Unified Framework
Role-Aligned Agents
Lightweight Edge Inference
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