What are the chances that my company finds out about my side business (LLP)

Me and a couple of my friends are all employed in different mncs and banks. We have a side business for which we have recently opened an LLP.

1. Can these MNCs find out about our businesses without us disclosing it anywhere.
2. One of our friends is employed in a reputed Indian bank, the issue is banks somehow already get info on any new LLP that is formed so are there any bank specific risks (Just a day after our LLP was formed two banks approaches us to open accounts with them)?