Resilient wireless sensor networks for cyber-physical systems

Resilient wireless sensor networks for cyber-physical systems

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Owing to their low deployment costs, wireless sensor networks (WSN) may act as a key enabling technology for a variety of spatially distributed cyber-physical system (CPS) applications, ranging from intelligent traffic control to smart grids. However, besides providing tremendous benefits in terms of deployment costs, they also open up new possibilities for malicious attackers, who aim to cause financial losses or physical damage. Since perfectly securing these spatially distributed systems is either impossible or financially unattainable, we need to design them to be resilient to attacks: even if some parts of the system are compromised or unavailable due to the actions of an attacker, the system as a whole must continue to operate with minimal losses. In a CPS, control decisions affecting the physical process depend on the observed data from the sensor network. Any malicious activity in the sensor network can therefore severely impact the physical process, and consequently the overall CPS operations. These factors necessitate a deeper probe into the domain of resilient WSN for CPS. In this chapter, we provide an overview of various dimensions in this field, including objectives of WSN in CPS, attack scenarios and vulnerabilities, the notion of attack resilience in WSN for CPS, and solution approaches toward attaining resilience. We also highlight major challenges, recent developments, and future directions in this area.

Chapter Contents:

  • 11.1 Introduction
  • 11.1.1 Cyber-physical systems and sensor networks
  • 11.1.2 Information-security goals and cyber-physical systems
  • 11.2 Objectives of WSN for CPS
  • 11.2.1 Main objectives
  • 11.2.2 Examples
  • 11.3 Attacks against sensors
  • 11.3.1 Types of attacks
  • Denial-of-service (DoS) attacks
  • Data falsification attacks
  • 11.3.2 Examples of attacks and vulnerabilities in CPS
  • 11.4 Notion of attack resilience
  • 11.4.1 Security and resilience
  • 11.4.2 Random failures and intentional attacks
  • 11.4.3 Challenges
  • 11.5 Attack-resilient design
  • 11.5.1 Approaches for attack resilience
  • 11.5.2 Examples
  • 11.6 Conclusions and future directions
  • Acknowledgments
  • References

Inspec keywords: telecommunication network reliability; telecommunication computing; telecommunication security; wireless sensor networks

Other keywords: WSN; CPS operations; intelligent traffic control; smart grids; resilient wireless sensor networks; control decisions; attack resilience; deployment cost; malicious attackers; spatially-distributed cyber-physical system

Subjects: Reliability; Communications computing; Data security; Wireless sensor networks

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