Introduction to Information Security – Experience

I did the Introduction to Information Security course (CS6035) as part OMSCS Summer 2017 semester.

The course was a good overview of various aspects of Information Security. It broadly covered topics like system security, network security, web security, cryptography, different types of malware etc. The course was lighter in terms of work load compared to the other subjects I’ve taken so far. I really liked the projects which were thoughtfully designed to give the students hands-on experience in each of these topics.

The four projects that we had to do were:

  1.  Implementing Buffer Overflow in a given vulnerable code. This required brushing up on C basics,  understanding how process memory allocation works internally and some playing around with gdb.
  2.  Analyzing provided malware samples using Cuckoo, an automatic malware analyzer and sandbox to identify behaviors such as registry updates, keyboard and mouse sniffing, remote access, privilege escalation etc.
  3. Understanding and implementing the RSA algorithm in python, identifying the weakness in using smaller length keys (64 bit) and decrypting an RSA encrypted message by exploiting this weakness.
  4. Exploiting vulnerabilities in a target (sample) website using Cross-Site Request Forgery (XSRF), Cross Site Scripting (XSS) and SQL injection.

Apart from the projects, there were 10 Quizzes to be completed, one per week throughout the course. The various exploits discussed in the course are fairly easy to be introduced in a codebase if you are not aware of these. Unfortunately, these are pretty common even now, many years after they were first discovered.

Hence, no matter the type of software development one is into (mobile, web, DB, relatively low level languages like C, embedded device programming, bare metal etc.), these exploits and their counter-measures are a must-know.

 

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