M. Alvioli the recommended paper gives some good insights, thank you.

One important area is using Natural Language Processing techniques in Cyber Security, Fraud Detection and Author Profiling. These area of research gained an importance due to the tremendous usage of digital platforms.

For this areas Python is commonly used, and a lot of packages are there for NLP and machine learning such as Scikit, NLTK, spaCy, gensim, ....

You can start from here:

Chapter A Decade of Shared Tasks in Digital Text Forensics at PAN