Cyber Security

You can go to both based on your subjects in 12th. The filed you want to go are rather need of hour. Both have good perspective in coming time and are very specialised jobs
I would rather ask you what are you bend towards investigating or analysis. If you like investigating go for cyber security and if you like analysis go for digital forensics
Basic appetite is IT for both.

Generally no. Cyber security course needs Graduation in relevant discipline. While minimum 2 years of working experience is needed in IT in case of graduation in different discipline.

Sir your son has scored a little bit less percentage as per today demands of colleges but yes still he can do cyber security specialisation from the university which offers this course. As every college has its own criteria for eligibilty for admissions so you can contact or download the college's brochure.

You should go for B.Sc. IT or B.Tech IT as it includes all the courses for which you are looking for to get specializations in cyber security. You can opt for Poornima University as it has B.Tech with CS in dual specialisation with cloud technology and information security. Also it has B.Sc. In Information security.

Hi, as far as I know
You cannot join a college for cyber security course rather you can opt for Online courses from udemy or coursera or udacity or LinkedIn learning etc.

The state wise list of B.Tech CSE Cyber security colleges is given below. B.Tech CSE Cyber security Colleges in Uttar Pradesh
1. Galgotia University Greater Noida
2. SRMIST Delhi NCR Campus Gaziabad
3. IIMT University Meerut
4. Integral University Lucknow
B.Tech CSE Cyber security Colleges in Uttarakhand
1. Quantum University, Roorkee
2. Graphic Era Deemed to be University, Dehradun
3. DIT University, Dehradun
B.Tech CSE Cyber security Colleges in Punjab
1. Thapar Institute of Engineering and Technology, Patiala
2. Lovely Professional University, Phagwara
3. Chandigarh University
4. GNA University, Phagwara
5. CT University, Ludhiana.