Which are the best colleges for a cyber security course in Chennai?

NIIT is an excellent choice, in my opinion. This is particularly true now that their highly regarded courses may be taken in an online format. Thanks to a course I took at India's National Institute of Information Technology, I am now proficient in state-of-the-art data Science and machine learning

In Chennai, Hindustan University, University Of Madras and faculty of engineering and technology (FET) alone offer cyber security courses. For ethical hacking courses refer: https://www.shiksha.com/it-software/networking-hardware-security/colleges/ethical-hacking-colleges-chennai