Cybersecurity primarily falls under the field of Information Technology (IT), specifically within the subfields of:

Computer Science

Information Security

Information Systems

Network and Systems Administration

Engineering (in the context of systems and software security)

It also overlaps with:

Law and Policy (e.g., data protection regulations like GDPR)

Risk Management

Criminal Justice (e.g., digital forensics and cybercrime investigations)

Ethical Hacking / Penetration Testing

Cybersecurity comes under the field of Computer Science and Information Technology. It focuses on protecting systems, networks, and data from digital attacks. It involves topics like ethical hacking, network security, cryptography, and data protection.

You can study cybersecurity through B.Tech in CSE with specialization in Cybersecurity, B.Sc. in Cybersecurity, or professional certifications like CEH, CompTIA Security+, etc.