Hello student yes you need to study maths in class 12 to study cyber security as most of the college offered B.tech in cyber security so students cannot do B.tech without mathematics.

The below mentioned are the eligibility criteria for both UG and PG, which the candidate has to fit in.

For Cyber Security Undergraduates:

• The students should have completed their 12th with Maths, Physics, and Chemistry as the compulsory subjects from a recognised board or university.
• They should have also scored a minimum of 50% marks once averaged during their class 12th to get admission in this course.

Do refer this link for more info

https://dqxeclau.top/courses/cyber-security-course

Feel free to comment if you have any doubt

Good luck