Linas Bukauskas

Dr. Linas Bukauskas

Cybersecurity laboratory, Vilnius University, Vilnius, Vilniaus Miestas, Lithuania
orcid

Research Focus & Metrics

Academic Career Length

28Years (1999-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 January 2020 in Computers & Security
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Journal Article
Closed access
ABAgnė Brilingaitė
Agnė Brilingaitė
Linas BukauskasLinas Bukauskas
Linas Bukauskas
AJAusrius Juozapavicius
Ausrius Juozapavicius

5 March 2018 in Informatics in Education
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Journal Article
Open access
ABAgnė Brilingaitė
Agnė Brilingaitė
Linas BukauskasLinas Bukauskas
Linas Bukauskas
AJAnita Juškevičienė
Anita Juškevičienė

10 January 2023 in Heliyon
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Journal Article
Open access
Linas BukauskasLinas Bukauskas
Linas Bukauskas
ABAgnė Brilingaitė
Agnė Brilingaitė
AJAusrius Juozapavicius
Ausrius Juozapavicius
DLDaiva Lepaitė
Daiva Lepaitė
KIKęstutis Ikamas
Kęstutis Ikamas
RARimantė Andrijauskaitė
Rimantė Andrijauskaitė
The impact of cybersecurity (CS) on public well-being is increasing due to the continued digitisation process of all industry sectors. The protection of information systems rests upon a sufficient number of CS specialists and their competences. A cyber-competence map describing the capacity and trends of the CS workforce is an essential element of the workforce development strategy. Large enterprises tend to have narrowly specialised employees with clearly identifiable roles. Still, most enterprises in small countries are SMEs. Therefore, the tasks and responsibilities of many CS-related specialists overlap the functions of several roles. This paper aims to develop a small-state cybersecurity competence map consistent with the standards of professional organisations. The work applies a combined qualitative and quantitative methodological approach to collect data using questionnaires and expert interviews in the CS field organisations. The study includes a representative public survey, a large-scale survey of company executives, an exploratory CS expert survey, and a comprehensive job posting analysis. Finally, a national CS competence map is presented and verified using two qualitative semi-structured interviews with field professionals. Even though the map reflects a status of a small nation state, it is activity-based and might be applicable in any country. As a future research direction, we will investigate the impact of early and late exposure to cybersecurity competences in education and framework applicability.

1 January 2022 in Journal of Cybersecurity
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Journal Article
Open access
PDF file
ABAgnė Brilingaitė
Agnė Brilingaitė
Linas BukauskasLinas Bukauskas
Linas Bukauskas
AJAusrius Juozapavicius
Ausrius Juozapavicius
EKEduardas Kutka
Eduardas Kutka
Active usage of threat intelligence information supports effective prevention, mitigation and defence against cyberattacks by threat actors ranging from individual amateurs to state organizations. However, threat intelligence highly depends on security specialists’ ability to share incident data on threat information-sharing platforms. Unfortunately, business managers and educational institutions undervalue the information-sharing aspect when planning the professional development of cybersecurity-related specialists. Consequently, cybersecurity specialists are insufficiently motivated to correctly communicate and propagate relevant information with team members, superiors, relevant institutions and the global community about the impact of the incident. Literature review reveals many technological, legal and psychological obstacles hindering successful information exchange. This research aims to improve threat information sharing by focusing on the educational aspect of the problem and analysing the attitude of cybersecurity specialists during cyber defence exercises (CDX). Our case study disclosed nine factors obstructing both proper reporting to relevant authorities and adequate communication among teams. By addressing these factors, CDX organizers could substantially improve the development of highly beneficial soft skills of the technical specialists.

1 January 2016 in Procedia Computer Science
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Journal Article
Open access
MHMahmoud E. Hodeish
Mahmoud E. Hodeish
Linas BukauskasLinas Bukauskas
Linas Bukauskas
VHVikas T. Humbe
Vikas T. Humbe
Recently, based on the concept of Visual Secret Sharing (VSS) scheme proposed by Naor and Shamir in 1994, many of schemes have been proposed to protect the security of binary image. Yet, the problems of pixel expansion, extensive codebook designs, and lossy recovery are still unsolved. The current paper attempts to propose a new (k,n) scheme to refute the pixel expansion based on codebook and transpose of matrices. This scheme will offer promising solutions for the security condition, computation complexity, storage requirement, fast network transmission, and reconstructing the secret image accurately without any distortion

16 January 2022 in Applied Sciences
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Journal Article
Open access
PDF file
AJAusrius Juozapavicius
Ausrius Juozapavicius
ABAgnė Brilingaitė
Agnė Brilingaitė
Linas BukauskasLinas Bukauskas
Linas Bukauskas
RLRicardo Lugo
Ricardo Lugo
Password hygiene plays an essential part in securing systems protected with single-factor authentication. A significant fraction of security incidents happen due to weak or reused passwords. The reasons behind differences in security vulnerable behaviour between various user groups remains an active research topic. The paper aims to identify the impact of age and gender on password strength using a large password dataset. We recovered previously hashed passwords of 102,120 users from a leaked customer database of a car-sharing company. Although the measured effect size was small, males significantly had stronger passwords than females for all age groups. Males aged 26–45 were also significantly different from all other groups, and password complexity decreased with age for both genders equally. Overall, very weak password hygiene was observed, 72% of users based their password on a word or used a simple sequence of digits, and passwords of over 39% of users were found in word lists of previous leaks.