EXHIBIT 23
Consent of Independent Registered Public Accounting Firm
The Board of Directors
Ambac Financial Group, Inc.:
We consent to the incorporation by reference in the Registration Statements (Nos. 333-110145 and 333-52449) on Form S-8 of Ambac Financial Group, Inc. of our report dated June 28, 2007, relating to the statements of net assets available for plan benefits of the Ambac Financial Group, Inc. Savings Incentive Plan as of December 31, 2006 and 2005, and the related statements of changes in net assets available for plan benefits for the years then ended, and the related supplemental Schedule H, line 4i- schedule of assets (held at end of year) as of December 31, 2006, which report appears in the December 31, 2006 annual report on Form 11-K of the Ambac Financial Group, Inc. Savings Incentive Plan.
/s/ KPMG LLP |
New York, New York |
June 28, 2007 |