{"title":"Water-Tight IoT–Just Add Security","authors":"G. Bour, C. Bosco, R. Ugarelli, M. Jaatun","doi":"10.3390/jcp3010006","DOIUrl":"https://doi.org/10.3390/jcp3010006","url":null,"abstract":"The security of IoT-based digital solutions is a critical concern in the adoption of Industry 4.0 technologies. These solutions are increasingly being used to support the interoperability of critical infrastructure, such as in the water and energy sectors, and their security is essential to ensure the continued reliability and integrity of these systems. However, as our research demonstrates, many digital solutions still lack basic security mechanisms and are vulnerable to attacks that can compromise their functionality. In this paper, we examine the security risks associated with IoT-based digital solutions for critical infrastructure in the water sector, and refer to a set of good practices for ensuring their security. In particular, we analyze the risks associated with digital solutions not directly connected with the IT system of a water utility. We show that they can still be leveraged by attackers to trick operators into making wrong operational decisions.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133798984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giorgia Tempestini, E. Rovira, Aryn A. Pyke, Francesco Di Nocera
{"title":"The Cybersecurity Awareness INventory (CAIN): Early Phases of Development of a Tool for Assessing Cybersecurity Knowledge Based on the ISO/IEC 27032","authors":"Giorgia Tempestini, E. Rovira, Aryn A. Pyke, Francesco Di Nocera","doi":"10.3390/jcp3010005","DOIUrl":"https://doi.org/10.3390/jcp3010005","url":null,"abstract":"Knowledge of possible cyber threats as well as awareness of appropriate security measures plays a crucial role in the ability of individuals to not only discriminate between an innocuous versus a dangerous cyber event, but more importantly to initiate appropriate cybersecurity behaviors. The purpose of this study was to construct a Cybersecurity Awareness INventory (CAIN) to be used as an instrument to assess users’ cybersecurity knowledge by providing a proficiency score that could be correlated with cyber security behaviors. A scale consisting of 46 items was derived from ISO/IEC 27032. The questionnaire was administered to a sample of college students (N = 277). Based on cybersecurity behaviors reported to the research team by the college’s IT department, each participant was divided into three groups according to the risk reports they received in the past nine months (no risk, low risk, and medium risk). The ANOVA results showed a statistically significant difference in CAIN scores between those in the no risk and medium-risk groups; as expected, CAIN scores were lower in the medium-risk group. The CAIN has the potential to be a useful assessment tool for cyber training programs as well as future studies investigating individuals’ vulnerability to cyberthreats.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114679671","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Raphael Kiesel, Marvin Lakatsch, Alexander Mann, Karl Lossie, F. Sohnius, R. Schmitt
{"title":"Potential of Homomorphic Encryption for Cloud Computing Use Cases in Manufacturing","authors":"Raphael Kiesel, Marvin Lakatsch, Alexander Mann, Karl Lossie, F. Sohnius, R. Schmitt","doi":"10.3390/jcp3010004","DOIUrl":"https://doi.org/10.3390/jcp3010004","url":null,"abstract":"Homomorphic encryption enables secure cloud computing over the complete data lifecycle. As so-called in-use encryption methodology, it allows using encrypted data for, e.g., data analysis—in contrast to classic encryption methods. In-use encryption enables new ways of value creation and an extensive use of cloud computing for manufacturing companies. However, homomorphic encryption is not widely implemented in practice yet. This is mainly since homomorphic encryption has higher computation times and is limited regarding its calculation operations. Nevertheless, for some use cases, the security requirements are a lot stricter than, e.g., timeliness requirements. Thus, homomorphic encryption might be beneficial. This paper, therefore, analyzes the potential of homomorphic encryption for cloud computing in manufacturing. First, the potential and limitations for both classic and homomorphic encryption are presented on the basis of a literature review. Second, to validate the limitations, simulations are executed, comparing the computation time and data transfer of classic and homomorphic encryption. The results show that homomorphic encryption is a tradeoff of security, time, and cost, which highly depends on the use case. Therefore, third, manufacturing use cases are identified; the two use cases of predictive maintenance and contract manufacturing are presented in detail, demonstrating how homomorphic encryption can be beneficial.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130829535","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"The Privacy Flag Observatory: A Crowdsourcing Tool for Real Time Privacy Threats Evaluation","authors":"V. Vlachos, Y. Stamatiou, Sotiris Nikoletseas","doi":"10.3390/jcp3010003","DOIUrl":"https://doi.org/10.3390/jcp3010003","url":null,"abstract":"Instilling good privacy practices to developers and users appears to be a difficult and daunting task. The World Wide Web encompasses a panspermia of different technologies, commercial and open source apis, evolving security standards and protocols that can be deployed towards the implementation of complex, powerful, web applications. At the same time, the proliferation of applications and services on all types of devices has also increased the attack surface for privacy threats. In this paper, we present the Privacy Flag Observatory, a platform which is one of the main tools produced by the Privacy Flag eu funded research project. The goal of this initiative is to raise awareness among European citizens of the potential privacy threats that beset the software and services they trust and use every day, including websites and smartphone applications. The Privacy Flag Observatory is one of the components that contributed to a large extent, to the success of the project’s goals. It is a real-time security and privacy threat monitoring platform whose aim is to collect, archive, analyze and present security and privacy-related information to the broader public as well as experts. Although the platform relies on crowdsourcing information gathering strategies and interacts with several other components installed on users’ devices or remote servers and databases, in this paper, we focus on the observatory platform referring only cursorily to other components such as the mobile phone add-on.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132325654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Journal of Cybersecurity and Privacy Editorial Off
{"title":"Acknowledgment to the Reviewers of Journal of Cybersecurity and Privacy in 2022","authors":"Journal of Cybersecurity and Privacy Editorial Off","doi":"10.3390/jcp3010002","DOIUrl":"https://doi.org/10.3390/jcp3010002","url":null,"abstract":"High-quality academic publishing is built on rigorous peer review [...]","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115514439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Investigation to Detect Banking Malware Network Communication Traffic Using Machine Learning Techniques","authors":"M. Kazi, Steve Woodhead, D. Gan","doi":"10.3390/jcp3010001","DOIUrl":"https://doi.org/10.3390/jcp3010001","url":null,"abstract":"Banking malware are malicious programs that attempt to steal confidential information, such as banking authentication credentials, from users. Zeus is one of the most widespread banking malware variants ever discovered. Since the Zeus source code was leaked, many other variants of Zeus have emerged, and tools such as anti-malware programs exist that can detect Zeus; however, these have limitations. Anti-malware programs need to be regularly updated to recognise Zeus, and the signatures or patterns can only be made available when the malware has been seen. This limits the capability of these anti-malware products because they are unable to detect unseen malware variants, and furthermore, malicious users are developing malware that seeks to evade signature-based anti-malware programs. In this paper, a methodology is proposed for detecting Zeus malware network traffic flows by using machine learning (ML) binary classification algorithms. This research explores and compares several ML algorithms to determine the algorithm best suited for this problem and then uses these algorithms to conduct further experiments to determine the minimum number of features that could be used for detecting the Zeus malware. This research also explores the suitability of these features when used to detect both older and newer versions of Zeus as well as when used to detect additional variants of the Zeus malware. This will help researchers understand which network flow features could be used for detecting Zeus and whether these features will work across multiple versions and variants of the Zeus malware.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125074469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Maria José Angélico Gonçalves, Rui Humberto Pereira, Marta Alexandra Guerra Magalhães Coelho
{"title":"User Reputation on E-Commerce: Blockchain-Based Approaches","authors":"Maria José Angélico Gonçalves, Rui Humberto Pereira, Marta Alexandra Guerra Magalhães Coelho","doi":"10.3390/jcp2040046","DOIUrl":"https://doi.org/10.3390/jcp2040046","url":null,"abstract":"User trust is a fundamental issue in e-commerce. To address this problem, recommendation systems have been widely used in different application domains including social media healthcare, e-commerce, and others. In this paper, we present a systematic review of the literature in the area of blockchain-based reputation models and we discuss the obtained results, answering the initial research questions. These findings lead us to conclude that the existing systems are based on a trusted third party (TTP) to collect and store reputation data, which does not provide transparency on users’ reputation scores. In the recent literature, on the one hand, blockchain-based reputation systems have been highlighted as possible solutions to effectively provide the necessary transparency, as well as effective identity management. On the other hand, new challenges are posed in terms of user privacy and performance, due to the specific characteristics of the blockchain. According to the literature, two major approaches have been proposed based on public and permissioned blockchains. Each approach applies adjusted models for calculating reputation scores. Despite the undoubted advantages added by a blockchain, the problem is only partially solved since there is no effective way to prevent blockchain oracles from feeding the chain with false, unfair, or biased data. In our future work, we intend to explore the two approaches discussed in the literature in order to propose a new blockchain-based model for deriving user reputation scores.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130607881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Understanding of the Vulnerability of Datasets to Disparate Membership Inference Attacks","authors":"Hunter D. Moore, Andrew Stephens, William Scherer","doi":"10.3390/jcp2040045","DOIUrl":"https://doi.org/10.3390/jcp2040045","url":null,"abstract":"Recent efforts have shown that training data is not secured through the generalization and abstraction of algorithms. This vulnerability to the training data has been expressed through membership inference attacks that seek to discover the use of specific records within the training dataset of a model. Additionally, disparate membership inference attacks have been shown to achieve better accuracy compared with their macro attack counterparts. These disparate membership inference attacks use a pragmatic approach to attack individual, more vulnerable sub-sets of the data, such as underrepresented classes. While previous work in this field has explored model vulnerability to these attacks, this effort explores the vulnerability of datasets themselves to disparate membership inference attacks. This is accomplished through the development of a vulnerability-classification model that classifies datasets as vulnerable or secure to these attacks. To develop this model, a vulnerability-classification dataset is developed from over 100 datasets—including frequently cited datasets within the field. These datasets are described using a feature set of over 100 features and assigned labels developed from a combination of various modeling and attack strategies. By averaging the attack accuracy over 13 different modeling and attack strategies, the authors explore the vulnerabilities of the datasets themselves as opposed to a particular modeling or attack effort. The in-class observational distance, width ratio, and the proportion of discrete features are found to dominate the attributes defining dataset vulnerability to disparate membership inference attacks. These features are explored in deeper detail and used to develop exploratory methods for hardening these class-based sub-datasets against attacks showing preliminary mitigation success with combinations of feature reduction and class-balancing strategies.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124039206","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Differentially Private Block Coordinate Descent for Linear Regression on Vertically Partitioned Data","authors":"Jins de Jong, B. Kamphorst, S. Kroes","doi":"10.3390/jcp2040044","DOIUrl":"https://doi.org/10.3390/jcp2040044","url":null,"abstract":"We present a differentially private extension of the block coordinate descent algorithm by means of objective perturbation. The algorithm iteratively performs linear regression in a federated setting on vertically partitioned data. In addition to a privacy guarantee, we derive a utility guarantee; a tolerance parameter indicates how much the differentially private regression may deviate from the analysis without differential privacy. The algorithm’s performance is compared with that of the standard block coordinate descent algorithm on both artificial test data and real-world data. We find that the algorithm is fast and able to generate practical predictions with single-digit privacy budgets, albeit with some accuracy loss.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121198709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Cybersecurity in Hospitals: An Evaluation Model","authors":"M. A. Ahmed, H. Sindi, M. Nour","doi":"10.3390/jcp2040043","DOIUrl":"https://doi.org/10.3390/jcp2040043","url":null,"abstract":"Hospitals have been historically known for their strong risk mitigation policies and designs, which are not becoming easier or simpler to plan and operate. Currently, new technologies and devices are developed every day in the medical industry. These devices, systems, and personnel are in an ever-higher state of connection to the network and servers, which necessitates the use of stringent cybersecurity policies. Therefore, this work aims to comprehensively identify, quantify, and model the cybersecurity status quo in healthcare facilities. The developed model is going to allow healthcare organizations to understand the imminent operational risks and to identify which measures to improve or add to their system in order to mitigate those risks. Thus, in this work we will develop a novel assessment tool to provide hospitals with a proper reflection of their status quo, which will assist hospital designers in adding the suggested cyber risk mitigation measures to the design itself before operation.","PeriodicalId":316237,"journal":{"name":"Journal of Cybersecurity and Privacy","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122414292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}