Threat/Attack Analysis

Jeremy Hynek

Attack trees allow threats against system security to be modelled concisely in a graphical format. The effectiveness of internet security, network security, banking system security, installation and personnel security may all be modelled using attack trees.

In the following webinar we decided to model a threat example in our AttackTree+ software.  We took an article from where hackers remotely killed a Jeep Cherokee while driving 70 miles per hour on the freeway. Using this article we created an example in our AttackTree+ software.

Note: much of the failure rate data was made up using information available on the internet.


Reliability Workbench Version 13… What’s New

Jeremy Hynek

As a follow up to our Webinar: What’s New in Reliability Workbench 13 Webinar I have included a recording of the meeting.

In addition to some minor visual upgrades the significant new features in Reliability Workbench 13.0 are:

  • The FIDES Prediction standard has been added to the Prediction Module.
  • 217Plus has been upgraded to version 2015.
  • The NPRD library has been upgraded to NPRD-2016.
  • The FMD 2016 failure modes library has been added to the NPRD parts library. FMECA blocks created from the NPRD library will now also have their failure modes automatically created where appropriate.
  • The SN29500 prediction standard has been updated to edition 2015-04.
  • IEC 61508 failure models have been extended to allow for high demand system frequencies (PFH values) to exclude detected failures.
  • Fault tree modularization has been made more efficient for projects that contain disconnected fault trees.
  • Sensitivity calculations may now be performed for IEC 61508 dormancy averaging. This applies when the dormant failure model is set to IEC 61508 in the project options dialog.



IEC 61508/61511, ISO26262, IEC61512, IEC62279…..ect…

Jeremy Hynek

Depending on your industry there are several adaptations of the IEC 61508 which include: the ISO 26262 for automotive, the IEC 61511 for SIS in process safety, the IEC 61513 for Nuclear power, IEC 62279 for Rail Software as well as many others. Basically if you are calculating System Integrity Levels (SIL) or Safety Instrumented Systems (SIS) we have you covered.

Please check out our webinar building a Fault Tree Model adhering to the IEC61508 (and all adaptations):