@conference {Kolokotronis2019IEEESrv,
	title = {On Blockchain Architectures for Trust-based Collaborative Intrusion Detection},
	booktitle = {Proceedings of the 1st IEEE Services Workshop on Cyber Security and Resilience in the Internet Of Things, within IEEE Services 2019},
	year = {2019},
	publisher = {IEEE},
	organization = {IEEE},
	abstract = {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.},
	keywords = {blockchain, collaborative intrusion detection, insider threats, security, trust management},
	author = {Nicholas Kolokotronis and Sotirios Brotsis and Georgios Germanos and Costas Vassilakis and Stavros Shiaeles}
}
@article {vassilakis2019HV,
	title = {Blockchain technologies for leveraging security and privacy},
	journal = {Homo Virtualis},
	volume = {2},
	number = {1},
	year = {2019},
	pages = {7{\textendash}14},
	abstract = {The contemporary internet has developed into a complex ecosystem involving humans, services, applications, machines and applications that interact exchanging information, ranging from e-mail messages and social media content to crowdsourcing data and videoconferencing. In this context, a number of security threats such as viruses and malware exist, while additionally the users{\textquoteright} privacy is jeopardized by threats such as personal data leakage, usage pattern monitoring, and so forth. The IoT trend renders the Internet ecosystem even more complex, by adding a rich set of services, applications and machines, many of them backed by new user roles; these elements are weaved into everyday life and industry alike. This increases both the number of opportunities available to threat agents for exploitation and the volume and value of the underlying infrastructure and data, increasing thus the user risk level. In this paper, we explore how the Blockchain technology can be used to leverage security and privacy in the modern Internet, both by providing underpinnings for preventive measures and by facilitating digital forensic evidence collection storage, safeguarding and controlled access.},
	keywords = {blockchain, Internet of Things, privacy, security},
	issn = {2585-3899},
	doi = {http://dx.doi.org/10.12681/homvir.20188},
	url = {https://ejournals.epublishing.ekt.gr/index.php/homvir/article/view/20188},
	author = {Costas Vassilakis}
}
