MS diploma: help to choose between intrusion detection/ cryptocurrency/ resiliency

Help me to choose diploma topic please! It should be related to information security, but still contain programming as much as possible. I see 3 ways, but hope you may propose another:

1. Intrusion detection with Artificial Intelligence. I'm not familiar with AI, and I'm afraid that this topic may appear too complex. Don't know how many materials are in web for now and don't want to take more than I can chew. Can you suggest something?


2. Cryptocurrency. Is there remains something to investigate at the moment? Mean for student that don't like mathematics very much.


3. Resiliency. Means high loaded systems, where resiliency can be interpreted as obligatory security element of my system. But still, what can be investigated here at the moment?


4. Also maybe something about cloud computing?