The Reserve Bank of India (RBI), in tandem with public sector and commercial banks, has undertaken data mining on a massive scale to identify how funds have been moved in the country after November 8. The government has come down hard on individuals and businesses operating doctored accounts, having deregistered and shut more than 100,000 companies and penalised more than 300,000 others. The I-T department has also identified over 37,000 shell or paper companies channelling black money through methods such as hawala. As a part of its Operation Clean Money, the I-T department identifies individuals whose income tax return filings