CIBIL has introduced a B2B Service for Banks and Financial Institutions who provide Consumer / SME Loans and Credit Cards. If you are a consumer and have defaulted on one of your Debts, the moment you try to gain access for Debt in another bank or else where, CIBIL sends an e-mail to the new lender cautioning about your Poor Payment Track Record.
CIBIL does this by taking into factors "String combinations of your name", Date of Birth and the easiest of all your PAN Card Number. So stop all the Defaults and try to settle all your accounts.