Privacy-preserving Surveillance Methods using Homomorphic Encryption (2020)
Conference Proceeding
Bowditch, W., Abramson, W., Buchanan, W. J., Pitropakis, N., & Hall, A. J. (2020). Privacy-preserving Surveillance Methods using Homomorphic Encryption. In ICISSP: Proceedings of the 6th International Conference on Information Systems Security and Privacy (240-248). https://doi.org/10.5220/0008864902400248

Data analysis and machine learning methods often involve the processing of cleartext data, and where this could breach the rights to privacy. Increasingly, we must use encryption to protect all states of the data: in-transit, at-rest, and in-memory.... Read More about Privacy-preserving Surveillance Methods using Homomorphic Encryption.

Phishing URL Detection Through Top-Level Domain Analysis: A Descriptive Approach (2020)
Conference Proceeding
Christou, O., Pitropakis, N., Papadopoulos, P., Mckeown, S., & Buchanan, W. J. (2020). Phishing URL Detection Through Top-Level Domain Analysis: A Descriptive Approach. In Proceedings of the 6th International Conference on Information Systems Security and Privacy (289-298). https://doi.org/10.5220/0008902202890298

Phishing is considered to be one of the most prevalent cyber-attacks because of its immense flexibility and alarmingly high success rate. Even with adequate training and high situational awareness, it can still be hard for users to continually be awa... Read More about Phishing URL Detection Through Top-Level Domain Analysis: A Descriptive Approach.

An Enhanced Cyber Attack Attribution Framework (2018)
Conference Proceeding
Pitropakis, N., Panaousis, E., Giannakoulias, A., Kalpakis, G., Rodriguez, R. D., & Sarigiannidis, P. (2018). An Enhanced Cyber Attack Attribution Framework. In S. Furnell, H. Mouratidis, & G. Pernul (Eds.), Trust, Privacy and Security in Digital Business. TrustBus 2018 (213-228). https://doi.org/10.1007/978-3-319-98385-1_15

Advanced Persistent Threats (APTs) are considered as the threats that are the most challenging to detect and defend against. As APTs use sophisticated attack methods, cyber situational awareness and especially cyber attack attribution are necessary f... Read More about An Enhanced Cyber Attack Attribution Framework.

Towards a Security Enabled and SOA-based QoS (for the Smart Grid) Architecture (2018)
Journal Article
Chrysoulas, C., & Pitropakis, N. (2018). Towards a Security Enabled and SOA-based QoS (for the Smart Grid) Architecture. EAI Endorsed Transactions on Industrial Networks and Intelligent Systems, 4(12), 153551. https://doi.org/10.4108/eai.10-1-2018.153551

QoS and Security features are playing an important role in modern network architecures. Dynamic selection of services and by extension of service providers are vital in today’s liberalized market of energy. On the other hand it is equally important f... Read More about Towards a Security Enabled and SOA-based QoS (for the Smart Grid) Architecture.

Hiding in Plain Sight: A Longitudinal Study of Combosquatting Abuse (2017)
Conference Proceeding
Kintis, P., Miramirkhani, N., Lever, C., Chen, Y., Romero-Gómez, R., Pitropakis, N., …Antonakakis, M. (2017). Hiding in Plain Sight: A Longitudinal Study of Combosquatting Abuse. In CCS '17 Proceedings of the 2017 ACM SIGSAC Conference on Computer and Communications Security. https://doi.org/10.1145/3133956.3134002

Domain squatting is a common adversarial practice where attackers register domain names that are purposefully similar to popular domains. In this work, we study a specific type of domain squatting called "combosquatting," in which attackers register... Read More about Hiding in Plain Sight: A Longitudinal Study of Combosquatting Abuse.

Secure and Scalable Identity Management for the Aviation Industry (2017)
Presentation / Conference
Kintis, P., Kountouras, A., Pitropakis, N., Dagon, D., Antonakakis, M., Markou, C., & Buchner, P. (2017, May). Secure and Scalable Identity Management for the Aviation Industry

No abstract available.

The Greater The Power, The More Dangerous The Abuse: Facing Malicious Insiders in The Cloud (2017)
Conference Proceeding
Pitropakis, N., Lyvas, C., & Lambrinoudakis, C. (2017). The Greater The Power, The More Dangerous The Abuse: Facing Malicious Insiders in The Cloud. In C. Becker Westphall, Y. Woo Lee, B. Duncan, A. Olmsted, M. Vassilakopoulos, C. Lambrinoudakis, …R. Ege (Eds.), CLOUD COMPUTING 2017 - The Eighth International Conference on Cloud Computing, GRIDs, and Virtualization

The financial crisis made companies around the world search for cheaper and more efficient solutions to cover their needs in terms of computational power and storage. Their quest came to end with the birth of Cloud Computing infrastructures. However,... Read More about The Greater The Power, The More Dangerous The Abuse: Facing Malicious Insiders in The Cloud.

Cloud Security, Privacy, and Trust Baselines (2016)
Book Chapter
Pitropakis, N., Katsikas, S., & Lambrinoudakis, C. (2016). Cloud Security, Privacy, and Trust Baselines. In Cloud Computing Security Foundations and Challenges. Boca Raton: CRC Press

According to ISO 27001, a threat is a potential event. When a threat turns into an actual event, it may cause an undesirable incident. It is undesirable because the incident may harm an organization or a system, causing a security incident and/or t... Read More about Cloud Security, Privacy, and Trust Baselines.

The Far Side of Mobile Application Integrated Development Environments (2016)
Conference Proceeding
Lyvas, C., Pitropakis, N., & Lambrinoudakis, C. (2016). The Far Side of Mobile Application Integrated Development Environments. In S. Katsikas, C. Lambrinoudakis, & S. Furnell (Eds.), Trust, Privacy and Security in Digital Business; Lecture Notes in Computer Science (111-122). https://doi.org/10.1007/978-3-319-44341-6_8

Smart phones are, nowadays, a necessity for the vast majority of individuals around the globe. In addition to the ubiquitous computing paradigm supported by such devices, there are numerous software applications that utilize the high computational ca... Read More about The Far Side of Mobile Application Integrated Development Environments.

Towards an augmented authenticator in the Cloud (2015)
Conference Proceeding
Pitropakis, N., Yfantopoulos, N., Geneiatakis, D., & Lambrinoudakis, C. (2015). Towards an augmented authenticator in the Cloud. In 2014 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT). https://doi.org/10.1109/isspit.2014.7300603

Many times in the past, critical infrastructures like e-health and e-government services have become a target of cyber-attacks resulting to manipulation of sensitive information. Meanwhile, there are several approaches applying security and privacy p... Read More about Towards an augmented authenticator in the Cloud.

Till All Are One: Towards a Unified Cloud IDS (2015)
Conference Proceeding
Pitropakis, N., Lambrinoudakis, C., & Geneiatakis, D. (2015). Till All Are One: Towards a Unified Cloud IDS. In S. Fischer-Hübner, C. Lambrinoudakis, & J. López (Eds.), Trust, Privacy and Security in Digital Business; Lecture Notes in Computer Science (136-149). https://doi.org/10.1007/978-3-319-22906-5_11

Recently there is a trend to use cloud computing on service deployment, enjoying various advantages that it offers with emphasis on the economy which is achieved in the era of the financial crisis. However, along with the transformation of technology... Read More about Till All Are One: Towards a Unified Cloud IDS.

If you want to know about a hunter, study his prey: detection of network based attacks on KVM based cloud environments (2014)
Journal Article
Pitropakis, N., Anastasopoulou, D., Pikrakis, A., & Lambrinoudakis, C. (2014). If you want to know about a hunter, study his prey: detection of network based attacks on KVM based cloud environments. Journal of cloud computing: advances, systems and applications, 3(1), https://doi.org/10.1186/s13677-014-0020-6

Computational systems are gradually moving towards Cloud Computing Infrastructures, using the several advantages they have to offer and especially the economic advantages in the era of an economic crisis. In addition to this revolution, several secur... Read More about If you want to know about a hunter, study his prey: detection of network based attacks on KVM based cloud environments.

Behaviour reflects personality: detecting co-residence attacks on Xen-based cloud environments (2014)
Journal Article
Pitropakis, N., Pikrakis, A., & Lambrinoudakis, C. (2015). Behaviour reflects personality: detecting co-residence attacks on Xen-based cloud environments. International Journal of Information Security, 14(4), 299-305. https://doi.org/10.1007/s10207-014-0255-8

Cloud computing is gradually becoming the most popular option of Information Technology infrastructures. However, an important issue that has emerged through that revolution is the preservation of an adequate level of security for the infrastructure... Read More about Behaviour reflects personality: detecting co-residence attacks on Xen-based cloud environments.

It's All in the Cloud: Reviewing Cloud Security (2014)
Conference Proceeding
Pitropakis, N., Darra, E., Vrakas, N., & Lambrinoudakis, C. (2014). It's All in the Cloud: Reviewing Cloud Security. In 2013 IEEE 10th International Conference on Ubiquitous Intelligence and Computing and 2013 IEEE 10th International Conference on Autonomic and Trusted Computing. https://doi.org/10.1109/uic-atc.2013.13

Cloud computing is gradually replacing traditional IT infrastructures. However, an important issue that has emerged through that revolution is the preservation of an adequate level of security for the infrastructure. Currently there are many research... Read More about It's All in the Cloud: Reviewing Cloud Security.

A Practical Steganographic Approach for Matroska Based High Quality Video Files (2013)
Conference Proceeding
Pitropakis, N., Lambrinoudakis, C., Geneiatakis, D., & Gritzalis, D. (2013). A Practical Steganographic Approach for Matroska Based High Quality Video Files. In 2013 27th International Conference on Advanced Information Networking and Applications Workshops. https://doi.org/10.1109/waina.2013.39

Several steganographic algorithms have been proposed for protecting message secrecy against unauthorized "reads". The most used method for hiding a message relies on embedding the secret message in Least Significant Bit (LSB) on the cover object. Tho... Read More about A Practical Steganographic Approach for Matroska Based High Quality Video Files.