SECURITIES AND EXCHANGE COMMISSION

Washington, D.C.  20549

Form 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event

Reported):  November 21, 2005


Credit Suisse First Boston Mortgage Securities Corp.
CSFB Home Equity Asset Trust 2006-1

CREDIT SUISSE FIRST BOSTON MORTGAGE SECURITIES CORP.

(Exact name of registrant as specified in its charter)

Delaware	333-120966	13-3320910
(State or Other Jurisdiction of Incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)
Eleven Madison Avenue New York, New York 10010
(Address of Principal Executive Offices) (Zip Code)
Registrant’s telephone number, including area code (212) 325-2000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[ ]

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[ ]

Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

[ ]

Pre-commencement communications pursuant to Rule 14d-2(d) under the Exchange Act (17 CFR 240.14d-2(b))

[ ]

Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01. Other Events.

Filing of Computational Materials

Pursuant to Rule 424(b) under the Securities Act of 1933, concurrently with, or subsequent to, the filing of this Current Report on Form 8-K (the “Form 8-K”), Credit Suisse First Boston Mortgage Securities Corp. (the “Company”) is filing a prospectus and prospectus supplement with the Securities and Exchange Commission relating to its Credit Suisse First Boston Mortgage Securities Corp. CSFB Home Equity Asset Trust 2006-1.

Attached hereto as Exhibit 99.1 are the  “Computational Materials” (as defined in the no-action letter dated May 25, 1994 issued by the Division of Corporation Finance of the Securities and Exchange Commission (the “Commission”) to Kidder, Peabody Acceptance Corporation I, Kidder, Peabody & Co. Incorporated, and Kidder Structured Asset Corporation and the no-action letter dated May 27, 1994 issued by the Division of Corporation Finance of the Commission to the Public Securities Association) and “ABS Term Sheets” (as defined in the no-action letter dated February 17, 1995 issued by the Division of Corporation Finance of the Commission to the Public Securities Association) prepared and provided to the Registrant by Credit Suisse First Boston Corporation that are required to be filed pursuant to such letter.

In connection with the offering of the Credit Suisse First Boston Mortgage Securities Corp., CSFB Home Equity Asset Trust 2006-1, Credit Suisse First Boston LLC (“CSFB”), as underwriter of the Certificates, has prepared certain materials (the “Computational Materials”) for distribution to their potential investors.  Although the Company provided CSFB with certain information regarding the characteristics of the Mortgage Loans in the related portfolio, the Company did not participate in the preparation of the Computational Materials.

Item 9.01.  Financial Statements and Exhibits

         Information and Exhibits.

(a)

Not applicable.

(b)

Not applicable.

(c)

Exhibits:

99.1

Computational Materials

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

CREDIT SUISSE FIRST BOSTON

MORTGAGE

SECURITIES CORP.

By: /s/ Kevin Steele      

    Name: Kevin Steele

    Title: Vice President

Dated:  November 21, 2005

Exhibit Index

Exhibit

99.1

Computational Materials