For consumers and banks wondering how sensitive information leaks out to identity thieves, the answer may be blowing in the “digital wind.”

In two forthcoming studies, Eric Johnson, a professor at Dartmouth College’s Tuck School of Business, warns that investors, bank employees and companies that do work for banks may be releasing more than just music files on peer-to-peer file-sharing networks. They may be sharing their financial information, too. Even harmless searches can turn up those sensitive documents in a phenomenon Johnson calls “digital wind.”