Hello,

One can pursue ethical hacking after doing 10+2 in science stream. Though, it is beneficial to do that after a diploma or bachelor's degree in IT or computer field. Some colleges conduct entrance exams to give admissions, to know more about ethical hacking visit, https://www.careers360.com/careers/ethical-hacker

Nonetheless, there is no compulsion to be a graduate, if you give your full time and concentration to it, you will be able to do it.

Hope this information helps you.