I am presently doing B.Tech CSE in Pondicherry. What shall I do to become an ethical hacker after graduating?

Hello Sriram, You are already doing B.Tech in CSE. This in itself will enable you to do many things required by ethical hacker. However, I am attaching a link that will give you all the required information. https://www.shiksha.com/it-software/networking-hardware-security/colleges/ethical-hacking-c