Can’t really put these in the form of topics but here are some ideas for your consideration:

• Some of the challenges of forensic include being able to extract information from logs of data, you might want to look into the area of using machinelearning / Artificial intelligence to parse data and generate a chainof evidence.
• Also, are there ways to safely extract data from encrypted communications,?
• Generating chain of evidence when anonymity is involved, probably in a block chain environment?

Best wishes