CSFB MBS Class Downgraded

Moody's Investors Service has downgraded one class from a transaction issued by Credit Suisse First Boston Mortgage in 2002 and placed one class from another deal under review for possible downgrade.Class B-F of Credit Suisse First Boston Mortgage Acceptance Corp. series 2002-HE4 was downgraded from B1 to Caa3, and class B-1 of Credit Suisse First Boston Mortgage Securities Corp. series 2002-HE11 was placed under review for possible downgrade. The actions were attributed to credit enhancement levels, including excess spread, that were deemed low in view of projected losses. The pools are backed by subprime, first-lien, fixed- and adjustable-rate loans. The rating agency can be found online at http://www.moodys.com.