2 research outputs found

    Analysis of the impact of denial of service attacks on centralized control in smart cities

    Get PDF
    The increasing threat of Denial of Service (DoS) attacks targeting Smart City systems impose unprecedented challenges in terms of service availability, especially against centralized control platforms due to their single point of failure issue. The European ARTEMIS co-funded project ACCUS (Adaptive Cooperative Control in Urban (sub) Systems) is focused on a centralized Integration and Coordination Platform (ICP) for urban subsystems to enable real-time collaborative applications across them and optimize their combined performance in Smart Cities. Hence, any outage of the ACCUS ICP, due to DoS attacks, can severely affect not only the interconnected subsystems but also the citizens. Consequently, it is of utmost importance for ACCUS ICP to be protected with the appropriate defense mechanisms against these attacks. Towards this direction, the measurement of the performance degradation of the attacked ICP server can be used for the selection of the most appropriate defense mechanisms. However, the suitable metrics are required to be defined. Therefore, this paper models and analyzes the impact of DoS attacks on the queue management temporal performance of the ACCUS ICP server in terms of system delay by using queueing theory

    Π ΠΎΠ·Ρ€ΠΎΠ±ΠΊΠ° ΠΌΠΎΠ΄Π΅Π»Ρ– для навчання Π°Π΄Π°ΠΏΡ‚ΠΈΠ²Π½ΠΎΡ— систСми розпізнавання ΠΊΡ–Π±Π΅Ρ€Π°Ρ‚Π°ΠΊ для Π½Π΅ΠΎΠ΄Π½ΠΎΡ€Ρ–Π΄Π½ΠΈΡ… ΠΏΠΎΡ‚ΠΎΠΊΡ–Π² Π·Π°ΠΏΠΈΡ‚Ρ–Π² Π² Ρ–Π½Ρ„ΠΎΡ€ΠΌΠ°Ρ†Ρ–ΠΉΠ½ΠΈΡ… систСмах

    Get PDF
    The study presents results aimed at further development of models for intelligent and self-educational systems of recognising abnormalities and cyberattacks in mission-critical information systems (MCIS). It has been proven that the existing systems of cyberdefence still significantly rely on using models and algorithms of recognising cyberattacks, which allow taking into account information about the structure of incoming streams or the attackers’ change of the intensity of queries, the speed of the attack, and the duration of the impulse.A mathematical model has been suggested for the system module of intelligent identification of cyberattacks in heterogeneous flows of queries and network forms of cyberattacks. The model recognises heterogeneous incoming flows of queries and any possible change in the query intensity and other parameters of a targeted cyberattack aimed at a MCIS.Simulation models, which had been created in MATLAB and Simulink, were used to research the dynamics of changes in the states of the subsystem of blocking queries in the process of detecting cyberattacks in a MCIS. The probability of solving the problem of recognising cyberattacks in heterogeneous flows of queries and network forms of cyberattacks is 85–98 %, depending on the type of the cyberattack. The results of the modelling allow selection of ways to counter and neutralize the effects of the impact of such targeted attacks and help analyse more sophisticated cyberattacks.The suggested model of recognising complex cyberattacks if attackers use non-uniform flows of queries is more accurate, by 5–7 %, than the other existing models.The developed simulation models enable a 25–30 % decrease in the setup time for projects of cyberdefence systems, including SIRCA for CIS or MCIS.ΠŸΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π° матСматичСская модСль для модуля систСмы ΠΈΠ½Ρ‚Π΅Π»Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ распознавания ΠΊΠΈΠ±Π΅Ρ€Π°Ρ‚Π°ΠΊ для Π½Π΅ΠΎΠ΄Π½ΠΎΡ€ΠΎΠ΄Π½Ρ‹Ρ… ΠΏΠΎΡ‚ΠΎΠΊΠΎΠ² запросов ΠΈ сСтСвых классов ΠΊΠΈΠ±Π΅Ρ€Π°Ρ‚Π°ΠΊ. МодСль ΡƒΡ‡ΠΈΡ‚Ρ‹Π²Π°Π΅Ρ‚ Π½Π΅ΠΎΠ΄Π½ΠΎΡ€ΠΎΠ΄Π½Ρ‹Π΅ Π²Ρ…ΠΎΠ΄Π½Ρ‹Π΅ ΠΏΠΎΡ‚ΠΎΠΊΠΈ запросов ΠΈ Π²ΠΎΠ·ΠΌΠΎΠΆΠ½ΠΎΡΡ‚ΡŒ измСнСния Π½Π°ΠΏΠ°Π΄Π°ΡŽΡ‰ΠΈΠΌΠΈ интСнсивности запросов Π² ΠΈΠ½Ρ„ΠΎΡ€ΠΌΠ°Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ… систСмах, позволяСт ΠΎΡΡƒΡ‰Π΅ΡΡ‚Π²Π»ΡΡ‚ΡŒ Π²Ρ‹Π±ΠΎΡ€ способов противодСйствия ΠΈ Π½Π΅ΠΉΡ‚Ρ€Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ послСдствий ΠΈΡ… Ρ€Π΅Π°Π»ΠΈΠ·Π°Ρ†ΠΈΠΈ, Π°Π½Π°Π»ΠΈΠ·ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ Π±ΠΎΠ»Π΅Π΅ слоТныС Π²ΠΈΠ΄Ρ‹ ΠΊΠΈΠ±Π΅Ρ€Π°Ρ‚Π°ΠΊ. Π‘ ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΠΈΠΌΠΈΡ‚Π°Ρ†ΠΈΠΎΠ½Π½Ρ‹Ρ… ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ, созданных Π² MatLAB ΠΈ Simulink, исслСдована Π΄ΠΈΠ½Π°ΠΌΠΈΠΊΠ° измСнСния состояний подсистСмы Π±Π»ΠΎΠΊΠΈΡ€ΠΎΠ²ΠΊΠΈ запросов Π² процСссС распознавания ΠΊΠΈΠ±Π΅Ρ€Π°Ρ‚Π°ΠΊ Π² критичСски Π²Π°ΠΆΠ½Ρ‹Ρ… ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½Ρ‹Ρ… систСмах.Π—Π°ΠΏΡ€ΠΎΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΎ ΠΌΠ°Ρ‚Π΅ΠΌΠ°Ρ‚ΠΈΡ‡Π½Ρƒ модСль для модуля систСми Ρ–Π½Ρ‚Π΅Π»Π΅ΠΊΡ‚ΡƒΠ°Π»ΡŒΠ½ΠΎΠ³ΠΎ розпізнавання ΠΊΡ–Π±Π΅Ρ€Π°Ρ‚Π°ΠΊ для Π½Π΅ΠΎΠ΄Π½ΠΎΡ€Ρ–Π΄Π½ΠΈΡ… ΠΏΠΎΡ‚ΠΎΠΊΡ–Π² Π·Π°ΠΏΠΈΡ‚Ρ–Π² Ρ‚Π° ΠΌΠ΅Ρ€Π΅ΠΆΠ½ΠΈΡ… класах ΠΊΡ–Π±Π΅Ρ€Π°Ρ‚Π°ΠΊ. МодСль Π²Ρ€Π°Ρ…ΠΎΠ²ΡƒΡ” Π½Π΅ΠΎΠ΄Π½ΠΎΡ€Ρ–Π΄Π½Ρ– Π²Ρ…Ρ–Π΄Π½Ρ– ΠΏΠΎΡ‚ΠΎΠΊΠΈ Π·Π°ΠΏΠΈΡ‚Ρ–Π² Ρ‚Π° ΠΌΠΎΠΆΠ»ΠΈΠ²Ρ–ΡΡ‚ΡŒ Π·ΠΌΡ–Π½ΠΈ Π½Π°ΠΏΠ°Π΄Π½ΠΈΠΊΠ°ΠΌΠΈ інтСнсивності Π·Π°ΠΏΠΈΡ‚Ρ–Π² Ρƒ Ρ–Π½Ρ„ΠΎΡ€ΠΌΠ°Ρ†Ρ–ΠΉΠ½ΠΈΡ… систСмах, Ρ‰ΠΎ дозволяє Π·Π΄Ρ–ΠΉΡΠ½ΡŽΠ²Π°Ρ‚ΠΈ Π²ΠΈΠ±Ρ–Ρ€ способів ΠΏΡ€ΠΎΡ‚ΠΈΠ΄Ρ–Ρ— Ρ‚Π° Π½Π΅ΠΉΡ‚Ρ€Π°Π»Ρ–Π·Π°Ρ†Ρ–Ρ— наслідків Π²Ρ–Π΄ Ρ—Ρ… Π²ΠΏΠ»ΠΈΠ²Ρƒ, Π°Π½Π°Π»Ρ–Π·ΡƒΠ²Π°Ρ‚ΠΈ Π±Ρ–Π»ΡŒΡˆ складні Π²ΠΈΠ΄ΠΈ ΠΊΡ–Π±Π΅Ρ€Π°Ρ‚Π°ΠΊ. Π—Π° допомогою Ρ–ΠΌΡ–Ρ‚Π°Ρ†Ρ–ΠΉΠ½ΠΈΡ… ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ, створСних Ρƒ MatLAB Ρ‚Π° Simulink, дослідТСно Π΄ΠΈΠ½Π°ΠΌΡ–ΠΊΡƒ Π·ΠΌΡ–Π½ΠΈ станів підсистСми блокування Π·Π°ΠΏΠΈΡ‚Ρ–Π² Π² процСсі розпізнавання ΠΊΡ–Π±Π΅Ρ€Π°Ρ‚Π°ΠΊ Ρƒ ΠΊΡ€ΠΈΡ‚ΠΈΡ‡Π½ΠΎ Π²Π°ΠΆΠ»ΠΈΠ²ΠΈΡ… ΠΊΠΎΠΌΠΏβ€™ΡŽΡ‚Π΅Ρ€Π½ΠΈΡ… систСмах
    corecore