You may study either CSE or IT, incase youre in Cyber Security or any other Specialization. Most of the Universities offer Electives in Cyber Security, Cloud Computing, Etc. However, you should focus parallely on Software Development, Data Science, AI/ML, Etc. As they have currently more job and placement prospects in India.

For more information about Cyber Security do follow the link below

https://www.careers360.com/courses/cyber-security-course