Tsinghua's game framework blocks cross-domain attacks on satellite IoT
Tripartite security game uses flow pricing to stop malicious packets before they reach satellites
Satellite-enabled Internet of Things (IoT) is increasingly vulnerable to cross-domain cyber attacks, where attackers compromise ground devices, inject malicious packets at IoT gateways, and exploit satellite transmission vulnerabilities. Single-domain defenses fall short. To address this, Linan Huang and colleagues from Tsinghua University developed a consolidated game framework that enables cooperative defense across both terrestrial and satellite domains.
Their model is a tripartite security game covering IoT devices, the access network, and satellite transmission. A key innovation is flow pricing: the satellite service provider (SAT-SP) prices data flows to motivate the IoT network operator (IoT-NO) to prevent malicious packet infiltration. Efficient learning algorithms let the IoT-NO discover optimal flow sampling strategies while SAT-SP determines optimal pricing. Simulations show the framework effectively counters cross-domain attacks and aligns incentives between parties that otherwise have conflicting interests.
- Tripartite security game models attacks across IoT devices, access networks, and satellite transmission
- Flow pricing mechanism motivates IoT operators to block malicious packets before satellite backhaul
- Learning algorithms optimize flow sampling and pricing; simulations validate cross-domain defense effectiveness
Why It Matters
Satellite IoT networks gain a practical, game-theoretic defense strategy that aligns incentives across operators and providers.