The document discusses the history of the mortgage crisis beginning in 2007 and the fraudulent foreclosure practices that emerged in its wake. It describes how hundreds of billions of dollars in risky mortgage-backed securities were sold globally and collapsed, forcing mass loan modifications and foreclosures. Loan servicers hired inexperienced staff who mishandled modifications while "robo-signers" approved foreclosures without verifying details. Widespread legal issues around mortgage ownership led to investigations and moratoriums on foreclosures. The crisis increased shadow inventories and will likely cause future price drops when properties are sold.