Intrusion Resilience Using Self-Healing Mechanism in Mobile Unattended WSNs

Wireless Sensor Networks (WSNs) has an immediate change to a wide range of attacks due to some distributed nature, limited sensor resources, and lack of tamper resistance. Once a sensor is corrupted, the adversary learns all secrets. Hence, most of the security measures become ineffective. Recovering secrecy after compromise requires either help from a trusted third party or access to a source of high-quality cryptographic randomness. Neither is available in Unattended Wireless Sensor Networks (UWSNs), often the sink visits the nodes. In previous results it has been shown that the sensor collaboration is an effective but expensive means of obtaining probabilistic intrusion resilience in static UWSNs. Hence it focus on intrusion resilience in Mobile Unattended Wireless Sensor Networks, where sensors move according to some mobility models. Such that a mobility feature could be independent from security (e.g., sensors move to improve area coverage). It defines a security metrics to evaluate intrusion resilience protocols for sensor networks. The proposed system uses cooperative protocol that by leveraging sensor mobility which allows compromised sensors to recover secure state after compromise. Hence it is obtained with very low overhead and in a fully distributed fashion. Keywords— WSN security, intrusion resilience, distributed adversary, self-healing, mobility.