On blockchain architectures for trust-based collaborative intrusion detection

Nicholas Kolokotronis, Sotirios Brotsis, Georgios Germanos, Costas Vassilakis, Stavros Shiaeles

Research output: Chapter in Book/Report/Conference proceedingConference contribution


This paper considers the use of novel technologies for mitigating attacks that aim at compromising intrusion detection systems (IDSs). Solutions based on collaborative intrusion detection networks (CIDNs) could increase the resilience against such attacks as they allow IDS nodes to gain knowledge from each other by sharing information. However, despite the vast research in this area, trust management issues still pose significant challenges and recent works investigate whether these could be addressed by relying on blockchain and related distributed ledger technologies. Towards that direction, the paper proposes the use of a trust-based blockchain in CIDNs, referred to as trust-chain, to protect the integrity of the information shared among the CIDN peers, enhance their accountability, and secure their collaboration by thwarting insider attacks. A consensus protocol is proposed for CIDNs, which is a combination of a proof-of-stake and proof-of-work protocols, to enable collaborative IDS nodes to maintain a reliable and tampered-resistant trust-chain.

Original languageEnglish
Title of host publicationProceedings - 2019 IEEE World Congress on Services (SERVICES)
EditorsCarl K. Chang, Peter Chen, Michael Goul, Katsunori Oyama, Stephan Reiff-Marganiec, Yanchun Sun, Shangguang Wang, Zhongjie Wang
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages8
ISBN (Electronic)978-1-7281-3851-0
ISBN (Print)978-1-7281-3852-7
Publication statusPublished - 29 Aug 2019
Event2019 IEEE World Congress on Services - Milan, Italy
Duration: 8 Jul 201913 Jul 2019

Publication series

NameIEEE SERVICES Proceedings Series
ISSN (Print)2378-3818
ISSN (Electronic)2642-939X


Conference2019 IEEE World Congress on Services
Abbreviated titleSERVICES 2019


  • Blockchain
  • Collaborative intrusion detection
  • Insider threats
  • Security
  • Trust management


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