Hello tanu,

As you have taken pcmb in 12th and considering you didn't have taken computer science subject so let me tell you that you can still study cyber security and get into the engineering colleges as you have taken mathematics also.

Definitely you would be required to work harder than those students who have studied computer subject in their 11th and 12th . But don't be disheartened because even those students grab the highest packages those who had not studied a single work of programming.

It all depends on you what will you be doing at college and how you execute your road map to grab the companies.