Network Hexagons Under Attack: Secure Crowdsourcing of Geo-Referenced Data

• URL: http://arxiv.org/abs/2506.05601v1
• Date: Thu, 05 Jun 2025 21:27:10 GMT
• Title: Network Hexagons Under Attack: Secure Crowdsourcing of Geo-Referenced Data
• Authors: Okemawo Obadofin, Joao Barros,
• Abstract summary: We propose an enhanced security architecture that combines public key infrastructure (PKI) with ephemeral certificates.<n>Our solution guarantees user and device anonymity through randomized key rotation and adaptive geospatial resolution.<n>Our results show that it is possible to achieve the required level of security without increasing latency by more than 25% or reducing the throughput by more than 7%.
• Score: 0.0
• License: http://creativecommons.org/licenses/by-nc-nd/4.0/
• Abstract: A critical requirement for modern-day Intelligent Transportation Systems (ITS) is the ability to collect geo-referenced data from connected vehicles and mobile devices in a safe, secure and anonymous way. The Nexagon protocol, which builds on the IETF Locator/ID Separation Protocol (LISP) and the Hierarchical Hexagonal Clustering (H3) geo-spatial indexing system, offers a promising framework for dynamic, privacy-preserving data aggregation. Seeking to address the critical security and privacy vulnerabilities that persist in its current specification, we apply the STRIDE and LINDDUN threat modelling frameworks and prove among other that the Nexagon protocol is susceptible to user re-identification, session linkage, and sparse-region attacks. To address these challenges, we propose an enhanced security architecture that combines public key infrastructure (PKI) with ephemeral pseudonym certificates. Our solution guarantees user and device anonymity through randomized key rotation and adaptive geospatial resolution, thereby effectively mitigating re-identification and surveillance risks in sparse environments. A prototype implementation over a microservice-based overlay network validates the approach and underscores its readiness for real-world deployment. Our results show that it is possible to achieve the required level of security without increasing latency by more than 25% or reducing the throughput by more than 7%.

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