Indrajeet Bhuyan is an Indian security researcher who previously made the smallest possible code of 2kb which could crash WhatsApp which affected 500 million people and also reported security holes in the WhatsApp web client that in some way exposes its users’ privacy. In August 2015, he found a flaw in Indian banking system affecting 20,000+ Indian banks using which an attacker can see the bank balance and transaction history of anyone.