Visible to the public Biblio

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2021-03-30
Gillen, R. E., Carter, J. M., Craig, C., Johnson, J. A., Scott, S. L..  2020.  Assessing Anomaly-Based Intrusion Detection Configurations for Industrial Control Systems. 2020 IEEE 21st International Symposium on "A World of Wireless, Mobile and Multimedia Networks" (WoWMoM). :360—366.

To reduce cost and ease maintenance, industrial control systems (ICS) have adopted Ethernetbased interconnections that integrate operational technology (OT) systems with information technology (IT) networks. This integration has made these critical systems vulnerable to attack. Security solutions tailored to ICS environments are an active area of research. Anomalybased network intrusion detection systems are well-suited for these environments. Often these systems must be optimized for their specific environment. In prior work, we introduced a method for assessing the impact of various anomaly-based network IDS settings on security. This paper reviews the experimental outcomes when we applied our method to a full-scale ICS test bed using actual attacks. Our method provides new and valuable data to operators enabling more informed decisions about IDS configurations.

2020-12-07
Lemes, C. I., Naessens, V., Vieira, M..  2019.  Trustworthiness Assessment of Web Applications: Approach and Experimental Study using Input Validation Coding Practices. 2019 IEEE 30th International Symposium on Software Reliability Engineering (ISSRE). :435–445.
The popularity of web applications and their world-wide use to support business critical operations raised the interest of hackers on exploiting security vulnerabilities to perform malicious operations. Fostering trust calls for assessment techniques that provide indicators about the quality of a web application from a security perspective. This paper studies the problem of using coding practices to characterize the trustworthiness of web applications from a security perspective. The hypothesis is that applying feasible security practices results in applications having a reduced number of unknown vulnerabilities, and can therefore be considered more trustworthy. The proposed approach is instantiated for the concrete case of input validation practices, and includes a Quality Model to compute trustworthiness scores that can be used to compare different applications or different code elements in the same application. Experimental results show that the higher scores are obtained for more secure code, suggesting that it can be used in practice to characterize trustworthiness, also providing guidance to compare and/or improve the security of web applications.
2019-07-01
Kebande, V. R., Kigwana, I., Venter, H. S., Karie, N. M., Wario, R. D..  2018.  CVSS Metric-Based Analysis, Classification and Assessment of Computer Network Threats and Vulnerabilities. 2018 International Conference on Advances in Big Data, Computing and Data Communication Systems (icABCD). :1–10.

This paper provides a Common Vulnerability Scoring System (CVSS) metric-based technique for classifying and analysing the prevailing Computer Network Security Vulnerabilities and Threats (CNSVT). The problem that is addressed in this paper, is that, at the time of writing this paper, there existed no effective approaches for analysing and classifying CNSVT for purposes of assessments based on CVSS metrics. The authors of this paper have achieved this by generating a CVSS metric-based dynamic Vulnerability Analysis Classification Countermeasure (VACC) criterion that is able to rank vulnerabilities. The CVSS metric-based VACC has allowed the computation of vulnerability Similarity Measure (VSM) using the Hamming and Euclidean distance metric functions. Nevertheless, the CVSS-metric based on VACC also enabled the random measuring of the VSM for a selected number of vulnerabilities based on the [Ma-Ma], [Ma-Mi], [Mi-Ci], [Ma-Ci] ranking score. This is a technique that is aimed at allowing security experts to be able to conduct proper vulnerability detection and assessments across computer-based networks based on the perceived occurrence by checking the probability that given threats will occur or not. The authors have also proposed high-level countermeasures of the vulnerabilities that have been listed. The authors have evaluated the CVSS-metric based VACC and the results are promising. Based on this technique, it is worth noting that these propositions can help in the development of stronger computer and network security tools.

Rosa, F. De Franco, Jino, M., Bueno, P. Marcos Siqueira, Bonacin, R..  2018.  Coverage-Based Heuristics for Selecting Assessment Items from Security Standards: A Core Set Proposal. 2018 Workshop on Metrology for Industry 4.0 and IoT. :192-197.

In the realm of Internet of Things (IoT), information security is a critical issue. Security standards, including their assessment items, are essential instruments in the evaluation of systems security. However, a key question remains open: ``Which test cases are most effective for security assessment?'' To create security assessment designs with suitable assessment items, we need to know the security properties and assessment dimensions covered by a standard. We propose an approach for selecting and analyzing security assessment items; its foundations come from a set of assessment heuristics and it aims to increase the coverage of assessment dimensions and security characteristics in assessment designs. The main contribution of this paper is the definition of a core set of security assessment heuristics. We systematize the security assessment process by means of a conceptual formalization of the security assessment area. Our approach can be applied to security standards to select or to prioritize assessment items with respect to 11 security properties and 6 assessment dimensions. The approach is flexible allowing the inclusion of dimensions and properties. Our proposal was applied to a well know security standard (ISO/IEC 27001) and its assessment items were analyzed. The proposal is meant to support: (i) the generation of high-coverage assessment designs, which include security assessment items with assured coverage of the main security characteristics, and (ii) evaluation of security standards with respect to the coverage of security aspects.

2018-04-02
Innokentievich, T. P., Vasilevich, M. V..  2017.  The Evaluation of the Cryptographic Strength of Asymmetric Encryption Algorithms. 2017 Second Russia and Pacific Conference on Computer Technology and Applications (RPC). :180–183.

We propose a method for comparative analysis of evaluation of the cryptographic strength of the asymmetric encryption algorithms RSA and the existing GOST R 34.10-2001. Describes the fundamental design ratios, this method is based on computing capacity used for decoding and the forecast for the development of computer technology.

2018-02-02
Whelihan, D., Vai, M., Evanich, N., Kwak, K. J., Li, J., Britton, M., Frantz, B., Hadcock, D., Lynch, M., Schafer, D. et al..  2017.  Designing agility and resilience into embedded systems. MILCOM 2017 - 2017 IEEE Military Communications Conference (MILCOM). :249–254.

Cyber-Physical Systems (CPS) such as Unmanned Aerial Systems (UAS) sense and actuate their environment in pursuit of a mission. The attack surface of these remotely located, sensing and communicating devices is both large, and exposed to adversarial actors, making mission assurance a challenging problem. While best-practice security policies should be followed, they are rarely enough to guarantee mission success as not all components in the system may be trusted and the properties of the environment (e.g., the RF environment) may be under the control of the attacker. CPS must thus be built with a high degree of resilience to mitigate threats that security cannot alleviate. In this paper, we describe the Agile and Resilient Embedded Systems (ARES) methodology and metric set. The ARES methodology pursues cyber security and resilience (CSR) as high level system properties to be developed in the context of the mission. An analytic process guides system developers in defining mission objectives, examining principal issues, applying CSR technologies, and understanding their interactions.