You have to take such WhatsApp messages with a pinch of salt and considering these circumstances such rumours find a lot of willing followers. You need to be careful. In case you have an account with any of these banks just call up the bank and tell them about the messages floating around. I am told that some banks have already issued a clarification that there is nothing to worry considering their health. Such tense market situations allow the rumour mongers to work over time. You must not give too much credence to such rumours. Yes Bank had a different set of problems. That does not mean that all private banks will go that way. Rely on the official statement coming from the bank or from the RBI.