Reserve Bank of India (RBI) Governor Shaktikanta Das has reiterated his concerns on the mushrooming of digital lending apps.“The need of the hour is to ensure assurance of safety after following a process of green-lighting (whitelisting) and due-diligence by the regulated entities. The RBI, in association with other relevant agencies, is taking steps to address this issue and take further steps as may be necessary,” Das said at the Global Fintech Festival in Mumbai.