Quality learning materials. Enjoyed the cryptography systems introduction, especially the one based on GPS coordinates.

this is good , but i think it's gonna be better by including subtitle inside a video.

Well done in American manner :)

Very Nice topic

Thanks Coursera for this course but i am not happy because in mt certificate my name is change so please help me to change my name

Very Good source for beginners and intermediate kb.

Very Good Course

the course is not easy but useful for comprehension

Very good cource and very much helpful

Nice i like it the notes are awsm

Nice and Informative Course.

It is very helpful for me

Excellent

Course syllabus is very good and interesting to learn and apply but the Professor who teaches and explains is not clear as I had to do all the learning based on the reading materials rather than the video lecture.

It was helpful and got to learn much more things

first the tutor accent is not very easy to understand.

second, i cannot finish my first week assignment dure to technical issues which i and some others also mentioned in discussion tab.