Do you actually need a security product in your car? Part 3 : Intrusion Prevention and Detection Systems

I ended part 2 with the promise that we will discuss about : 2) Intrusion detection and prevention systems (IDS/IPS or IDPS) From Wikipedia: Intrusion prevention systems (IPS), also known as intrusion detection and prevention systems (IDPS), are network security appliances that monitor network and/or system activities for malicious activity. The main functions of intrusion prevention systems are to identify malicious activity, log information about this activity, attempt to block/stop it, and report it. Intrusion prevention systems are considered extensions of intrusion detection systems because they both monitor network traffic and/or system activities for malicious activity. The main differences are, unlike intrusion detection systems, intrusion prevention systems are placed in-line and are able to actively prevent/block intrusions that are detected. More specifically, IPS can take such actions as sending an alarm, dropping the malicious packets, resetting the connection and/or blocking the traffic from the offending IP address.   IDPS for cars? Once inside, an attacker can utilize the vehicle’s internal communication bus and take control of additional modules inside the vehicle, including safety critical systems like the ABS and Engine Electronic Control Units (ECUs). Therefore, there is no “trusted device” anymore. Everything has to be assumed to be compromised. The…

Do you actually need a security product in your car? Part 2: the classical antivirus

I wrote in the first part of this article about Detection, Protection, Remediation and I stopped at the part where we analyze what kind of security products do you need in the car of tomorrow. 1)The classical antivirus We know it to be used mostly for files. But it can much more than that. a) Files There are many files that can enter the car and can produce damages: music video updates (binary or data) scripts configuration files for various subsystems html and javascript (plain text) for rendering Java compiled files (especially if you run Android) possibly Adobe Flash (not sure though) possible Microsoft Silverlight (not sure though) PDFs (reports, help files) Emails (MIME) SMSs Plenty of files to scan, isn’t it? These files can either contain malicious code (Java, JS) or may be specially crafted to exploit known vulnerabilities. This means that there has to be a kind of file checking, so classical antivirus is definitely not dead, despite the vehement comments of some executives and marketing people that wanted to advertise their newest technologies. However, it should be kept in mind that these scanners are mostly signature based. I say “mostly” because even though there are a lot of other detection…

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