MUMBAI, March 11 -- A 52-year-old Powai businessman lost Rs.1.38 crore to online share trading fraud after being randomly added to a WhatsApp group and falsely made into believing he was investing in the share market. The gang lured him in with promises of high returns and convinced him into investing in 'shares' by posting 'tips' from 'experts' and false testimonies by people who said they earned huge profits using the tips....