Two private information brokers Tuesday offered lawmakers "how-to" instructions for duping bank employees and customers into revealing confidential financial data.

In testimony before the House Banking Committee, the brokers said bank account numbers, credit card purchases, and other financial information are easily obtained by so-called "gag" telephone calls, in which an information broker impersonates a bank depositor or borrower.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.