A4 Article in conference proceedings
Cyber security of vehicle CAN bus (2019)

Pöyhönen, J., Kotilainen, P., Poikolainen, J., Kalmari, J., & Neittaanmäki, P. (2019). Cyber security of vehicle CAN bus. In T. Cruz, & P. Simoes (Eds.), ECCWS 2019 : Proceedings of the 18th European Conference on Cyber Warfare and Security (pp. 354-363). Academic Conferences International. Proceedings of the European conference on information warfare and security.

JYU authors or editors

Publication details

All authors or editors: Pöyhönen, Jouni; Kotilainen, Pyry; Poikolainen, Janne; Kalmari, Janne; Neittaanmäki, Pekka

Parent publication: ECCWS 2019 : Proceedings of the 18th European Conference on Cyber Warfare and Security

Parent publication editors: Cruz, Tiago; Simoes, Paulo


  • European Conference on Cyber Warfare and Security

Place and date of conference: Coimbra, Portugal, 4.-5.6.2019

ISBN: 978-1-912764-28-0

Journal or series: Proceedings of the European conference on information warfare and security

ISSN: 2048-8602

eISSN: 2048-8610

Publication year: 2019

Pages range: 354-363

Number of pages in the book: 884

Publisher: Academic Conferences International

Publication country: United Kingdom

Publication language: English

Publication open access: Not open

Publication channel open access:

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/67095


There are currently many research projects underway concerning the intelligent transport system (ITS), with the intent to develop a variety of communication solutions between vehicles, roadside stations and services. In the near future, the roll-out of 5G networks will improve short-range vehicle-to-vehicle traffic and vehicle-to-infrastructure communications. More extensive services can be introduced due to almost non-delayed response time. Cyber security is central for the usability of the services and, most importantly, for car safety. The Controller Area Network (CAN) is an automation bus that was originally designed for real-time data transfer of distributed control systems to cars. Later, the CAN bus was developed as a universal automation system for many automation solutions. One of its characteristics is that bus traffic is not supervised in any way due to the lack of timing of control. In other words there are no authentication mechanism. This article highlights different approaches and their usability to reveal the car’s CAN bus malfunctions. The study complements earlier studies on the safety of vehicles in the CAN bus. Based on the test results, practical methods can be evaluated to detect changes in CAN bus traffic, such as targeted cyber-attacks. The article is based on the results of a study on the cybersecurity of cars conducted at the University of Jyväskylä (AaTi study). Initially, the AaTi study attempted to identify the message content of the bus and to detect interferences via the Neural network solution. However, the problem with the neural network was the computational performance required and the lack of prediction accuracy. After that the study was focused on experiments that were based on the arrival times of control messages, that is, their timing-based intrusion detection. In this sense the research did concentrate on kernel density estimation, one-class support vector machine solution, absolute deviation method and categorization. Due to methodological challenges, a method for detecting intrusions based on statistical processing of message traffic was ultimately developed as an outcome of the study.

Keywords: cyber security; intelligent systems; autonomous cars; cyber attacks

Free keywords: cvbersecurity; car; CAN bus; intrusion detection

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2019

JUFO rating: 1

Last updated on 2021-09-08 at 08:45