MCA

Depends whether you are hired on campus or off-campus. On campus students can get a package of 3 to 3.5 lakhs while the off campus one can get a package of 2.4 to 2.8 lakhs per annum.

M.Sc computer science has more theoretical base in comparison to MCA which has more emphasis on applications development programming. MCA graduates are employable on applications projects easily. Indian IT industry is primarily an application development and maintenance support industry. Therefore, MCA graduates are better accepted in India IT industry over M.Sc CS graduates.

You are not eligible to seek admission in M.Tech as you have to be a B.Tech or MCA to seek admission in M.Tech. It is recommended that you opt for MCA lateral entry and do specialized short term courses on Cyber Security and also obtain Cyber Security certifications.

Following are the best options for you:
MSRIT
REVA University
Dayanand Sagar College of Engineering

Dear,
If you want to do MCA, it is very nice for future, but there is a condition, you must have maths in class 11th and 12th or B.Com. If you have any then just go for MCA.
Hope it is helpful.

MCA is open to graduates of all disciplines. Therefore, majority of syllabus of first year MCA is a repeat for students who join MCA after BCA. Lateral entry MCA students do not suffer any bias or discrimination. If you do Lateral entry MCA from leading universities, you will not be any disadvantage.