Hi,

you are a machanical student there is no connection between machanical engineering and cyber security. you should know the basics of network,programming and hardware. after that go for advanced. when you will learn all above then you can go for CEH for beginner cource of cyber security.

Candidates must have passed 10+2 from a recognized board of education. Candidates must have a minimum score of 50% aggregate in their 10+2, taking PCM as compulsory subjects. For to BSc in Cyber Security colleges, admissions are done on the basis of merit scores.

Hope this helps

Wish you luck