# A Method for Trust-Based Collaborative Smart Device Selection and Resource Allocation in the Financial Internet of Things

## TL;DR

This paper introduces a trust-based method to improve security and resource allocation in the Financial Internet of Things by using dynamic trust evaluation and game theory.

## Contribution

The novel contribution is a trust-based algorithm combining subjective and objective trust with dynamic blacklists and whitelists, along with a coalition game-based resource allocation method.

## Key findings

- The proposed trust-based algorithm improves task success rates in both single and complex attack scenarios.
- The coalition game-based resource allocation method enhances performance under constrained edge resources.
- Experimental results show significant improvements over existing approaches in terms of security and efficiency.

## Abstract

With the rapid development of the Financial Internet of Things (FIoT), many intelligent devices have been deployed in various business scenarios. Due to the unique characteristics of these devices, they are highly vulnerable to malicious attacks, posing significant threats to the system’s stability and security. Moreover, the limited resources available in the FIoT, combined with the extensive deployment of AI algorithms, can significantly reduce overall system availability. To address the challenge of resisting malicious behaviors and attacks in the FIoT, this paper proposes a trust-based collaborative smart device selection algorithm that integrates both subjective and objective trust mechanisms with dynamic blacklists and whitelists, leveraging domain knowledge and game theory. It is essential to evaluate real-time dynamic trust levels during system execution to accurately assess device trustworthiness. A dynamic blacklist and whitelist transformation mechanism is also proposed to capture the evolving behavior of collaborative service devices and update the lists accordingly. The proposed algorithm enhances the anti-attack capabilities of smart devices in the FIoT by combining adaptive trust evaluation with blacklist and whitelist strategies. It maintains a high task success rate in both single and complex attack scenarios. Furthermore, to address the challenge of resource allocation for trusted smart devices under constrained edge resources, a coalition game-based algorithm is proposed that considers both device activity and trust levels. Experimental results demonstrate that the proposed method significantly improves task success rates and resource allocation performance compared to existing approaches.