Now I'm not too familiar with the Indian Penal Code and Law in general, but there have been instances of whistleblowers being silenced in the past one way or another if the spotlight or public movement momentum is slow to follow. The chances of this happening are more in certain parts of the country like Bihar and UP etc.
It's unfortunate but the situation is slowly improving as time goes by and connectivity and access of information improves.
Does India have whistleblower protection written in to law?
(that would not help Hari directly but it could help him in his defense to not reveal his source)