BlockSIEM: Protecting smart city services through a blockchain-based and distributed SIEM

Juan Velandia Botello, Andrés Pardo Mesa, Fabián Ardila Rodríguez, Daniel Díaz-López, Pantaleone Nespoli, Félix Gómez Mármol

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


The Internet of Things (IoT) paradigm has revolutionized several industries (e.g., manufacturing, health, transport, education, among others) by allowing objects to connect to the Internet and, thus, enabling a variety of novel applications. In this sense, IoT devices have become an essential component of smart cities, allowing many novel and useful services, but, at the same time, bringing numerous cybersecurity threats. The paper at hand proposes BlockSIEM, a blockchain-based and distributed Security Information and Event Management (SIEM) solution framework for the protection of the aforementioned smart city services. The proposed SIEM relies on blockchain technology to securely store and access security events. Such security events are generated by IoT sentinels that are in charge of shielding groups of IoT devices. The IoT sentinels may be deployed in smart city scenarios, such as smart hospitals, smart transport systems, smart airports, among others, ensuring a satisfactory level of protection. The blockchain guarantees the non-repudiation and traceability of the registry of security events due to its features. To demonstrate the feasibility of the proposed approach, our proposal is implemented using Ethereum and validated through different use cases and experiments.

Original languageEnglish (US)
Article number4636
Pages (from-to)1-22
Number of pages22
JournalSensors (Switzerland)
Issue number16
StatePublished - Aug 18 2020

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering


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