IN9130 – Unassailable IT-systems

Schedule, syllabus and examination date

Choose semester

Changes in the course due to coronavirus

Autumn 2020 and Spring 2021 the exams of most courses at the MN Faculty will be conducted as digital home exams or oral exams, using the normal grading scale. The semester page for your course will be updated with any changes in the form of examination.

Please note that there may be changes in the form of examination for some courses taught Spring 2021. We aim to bring both the course description and the semester page of all courses up to date with correct information by 1 February 2021.

See general guidelines for examination at the MN Faculty autumn 2020.

Course content

The techniques presented have for several years been used in design of real time systems and other distributed systems. We concentrate on systems of interacting actors and model such systems in UML. Sequence Diagrams of UML are the core notation for intuitive and formal description of interaction patterns. Topics of the course include:

  • theoretic foundation for UML,
  • refinement concepts in a UML context,
  • modularity through contract-oriented specification,
  • modular security risk analysis.

Learning outcome

After having completed this course you can:

  • make software that is easy to analyse with respect to security and reliability and still easy to maintain.
  • understand how practical software development can benefit from theories about state machines, refinement, security risk analysis, formal reasoning, and modularity.
  • perform a simple security risk analysis.
  • obtain a solid understanding of the theoretical underpinning of security risk analysis.

Admission to the course

PhD candidates from the University of Oslo should apply for classes and register for examinations through Studentweb.

If a course has limited intake capacity, priority will be given to PhD candidates who follow an individual education plan where this particular course is included. Some national researchers’ schools may have specific rules for ranking applicants for courses with limited intake capacity.

PhD candidates who have been admitted to another higher education institution must apply for a position as a visiting student within a given deadline.

It may be useful with knowledge of modeling and formal methods, but it is not necessary.

Overlapping courses


The course is divided into three batches focusing on modeling, refinement and safety analysis, and there is a mandatory assignment per part that must be approved prior to the exam.

There are three hours of lectures and two hours of group tuition each week.


4 hours final written digital exam. All mandatory assignments must be passed prior to the exam.

It will also be counted as one of your three attempts to sit the exam for this course, if you sit the exam for one of the following courses: IN5130 – Unassailable IT-systems, INF5150 – Unassailable IT-systems (continued) , INF9150 – Unassailable IT-systems (continued)

Examination support material

All printed and written exam resources are allowed.

Language of examination

You may write your examination paper in Norwegian, Swedish, Danish or English.

Grading scale

Grades are awarded on a pass/fail scale. Read more about the grading system.

Resit an examination

Students who can document a valid reason for absence from the regular examination are offered a postponed examination at the beginning of the next semester. Re-scheduled examinations are not offered to students who withdraw during, or did not pass the original examination.

Special examination arrangements, use of sources, explanations and appeals

See more about examinations at UiO

Last updated from FS (Common Student System) Jan. 21, 2021 7:17:21 AM

Facts about this course

Teaching language