The course has no active instructors and was not updated for at least three years.

Simple or hard concepts are explain in the same amount of time.

Only two stars because of poor quality of videos.

unfortunately the instructor has a bad accent i found many difficulties in understanding this course in addition to that the course requires many prerequisites which i think is not existing in any person who are not graduated from any major related to computer science "as me !!" i am totally upset i actually lost money and time by watching this course and i'm not happy to tell you that but this is the truth . this is the only course in cyber-security track i really regretted by watching and paying for it

Poor presentation skills (mostly reading slides)

Unclear and inconsistent in what pre-requisite knowledge is needed for the course (in one place he assumes one does not know digital logic, but then later he assumes you know hardware languages, fpga design, etc.).

Was a waste of time, shame on Coursera that pre-requisite knowledge was removed from the site.

The course is awful, let's be honest. Complete waste of money. There's no recommended reading and the content is not easy to understand by itself, due to it being poorly put together.I wish I could get a refund, but cancelling will have to do.

The most boring course i have ever done in my life... Soporific course, Content interesting, but professor is just reading slides, with reading mistakes every 2-3 words. I would not recommend this course at all.

The material used for this course is so old that makes me feel I'm taking a course in the 90's. The narration is very dull and therefore hard to follow. Really disappointing.

The quality of the slides, video, and presentation in this course is much lower than those offered by this Speciality or coursera in general. Very disappointed in this.

Very slow paced and boring. The instructor is not good at teaching.

No interactive, instructor very boring!

very boring. Just reading from slides.