Document:

EXHIBIT 10.17

                       ASSIGNMENT AND ASSUMPTION OF LEASE

                THIS ASSIGNMENT AND ASSUMPTION OF LEASE (this "AGREEMENT") is
made as of August 4, 2006, by and between GLOBAL CREDIT ANALYTICS, INC., a
Delaware corporation ("ASSIGNOR") and XL CAPITAL ASSURANCE INC., a New York
stock insurance corporation ("ASSIGNEE").

                For and in consideration of the sum of Ten Dollars ($10.00) and
other good and valuable consideration paid by Assignee to Assignor, the receipt
and sufficiency of which are hereby acknowledged, Assignor hereby assigns,
transfers, sets over and conveys to Assignee, all of Assignor's right, title and
interest in and to that certain (i) Lease dated August 5, 1999 between 250 Park
Avenue LLC, as landlord, and Assignor, as tenant (the "LEASE") and (ii)
Agreement of Sublease dated April 7, 2003 between Assignor, as sublessor, and
Miller Buckfire Lewis & Co., LLC, as sublessee (the "SUBLEASE"). Assignee hereby
accepts the assignment and agrees to assume, fulfill, perform and discharge all
the various commitments, obligations and liabilities of Assignor, as tenant
under the Lease, and as sublandlord under the Sublease, in accordance with the
terms of the Lease and the Sublease, as the case may be.

                This Agreement shall inure to the benefit of and be binding upon
the parties hereto and their respective successors and assigns. This Agreement
shall be governed by, and construed under, the laws of the State of New York.

                IN WITNESS WHEREOF, Assignor and Assignee do hereby execute and
deliver this Agreement as of the date and year first above written.

                                        ASSIGNOR:
                                        ---------

                                        GLOBAL CREDIT ANALYTICS, INC., a
                                        Delaware corporation
                                        By: /s/ Edward B. Hubbard
                                           -----------------------------
                                             Name: Edward B. Hubbard
                                             Title:

                                        ASSIGNEE:
                                        ---------

                                        XL CAPITAL ASSURANCE INC.
                                        a New York stock insurance corporation
                                        By: /s/ Edward B. Hubbard
                                           -----------------------------
                                             Name: Edward B. Hubbard
                                             Title:EXHIBIT 10.18

        AMENDMENT NO. 1 TO FACULTATIVE QUOTA SHARE REINSURANCE AGREEMENT

                AMENDMENT NO. 1 dated as of August 4, 2006 by and between XL
FINANCIAL ASSURANCE LTD., a company incorporated under the laws of Bermuda
(hereinafter referred to as "Ceding Company") and XL INSURANCE (BERMUDA) LTD, a
company incorporated under the laws of Bermuda, (hereinafter referred to as
"Reinsurer").

                WHEREAS, the Ceding Company and the Reinsurer entered into a
facultative quota share reinsurance agreement effective August 17, 2001
("Facultative Agreement") attached hereto as Exhibit A pursuant to which the
Reinsurer agreed to cede to the Reinsurer, on a quota share basis, risk in
respect of Policies issued by the Ceding Company which cessions the Reinsurer
may accept or reject in its sole discretion;

                WHEREAS, the Ceding Company and the Reinsurer wish to amend the
Facultative Agreement to amend the terms of Article IV of the Facultative
Agreement provisions.

                Section 1. DEFINITIONS. Except as otherwise defined in this
Amendment No. 1, terms defined in the Facultative Agreement are used herein as
defined therein.

                Section 2. AMENDMENTS. The Facultative Agreement is hereby
amended as follows:

                2.01.   References in the Facultative Agreement (including
        references to the Facultative Agreement as amended hereby) to "this
        Agreement" (and indirect references such as "hereunder", "hereby",
        "herein" and "hereof") shall be deemed to be references to the
        Facultative Agreement as amended hereby.

                2.02.   Section 1.9 of Article IV is amended to add the
        following provisions at the end of said section:

        "Further, the Reinsurer shall have the right to terminate this
        Facultative Quota Share Reinsurance Agreement at any time upon not less
        than days prior written or electronic notice to the Ceding Company upon
        the occurrence of either one or the following events:

        (i)     a "Ceding Company Change in Control" (as defined below) and,

        (ii)    a downgrade of the Ceding Company's Standard & Poor's financial
        strength rating below AA or a downgrade of the Ceding Company's Moody's
        financial strength rating below Aa2.

For the purposes of this Facultative Quota Share Reinsurance Agreement, a
"Ceding Company Change in Control" will be deemed to occur in the event that (i)
the ownership in Security Capital Assurance Ltd ("SCA") by the Reinsurer or by
the Reinsurer and its affiliates, falls below

<PAGE>

thirty five percent (35%) or (ii) SCA's direct or indirect ownership interest in
the issued and outstanding shares of voting securities of the Ceding Company
falls below ninety five (95%)."

                Section 3. CONDITIONS PRECEDENT. The amendment to the
Facultative Agreement set forth in Section 2 above shall become effective, as of
the date hereof, upon the satisfaction of the following condition precedent:

                3.01. EXECUTION. This Amendment No. 1 shall have been executed
        and delivered by each of the Ceding Company and the Reinsurer.

                Section 4. MISCELLANEOUS. Except as herein provided, the
Facultative Agreement shall remain unchanged and in full force and effect. This
Amendment No. 1 may be executed in any number of counterparts, all of which
taken together shall constitute one and the same amendatory instrument and any
of the parties hereto may execute this Amendment No. 1 by signing any such
counterpart. This Amendment No. 1 shall be governed by, and construed in
accordance with, the laws of Bermuda.

                                      -2-
<PAGE>

The parties hereto have caused this Amendment No. 1 to be duly executed and
delivered as of the day and year first above written.

SIGNED for and on behalf of
XL INSURANCE (BERMUDA) LTD

By:
Name:
Title:

SIGNED for and on behalf of
XL FINANCIAL ASSURANCE LTD.

By:
Name:
Title:EXHIBIT 10.19

           AMENDMENT NO. 1 TO EXCESS OF LOSS REINSURANCE AGREEMENT

                AMENDMENT NO. 1 dated as of August 4, 2006 by and between XL
FINANCIAL ASSURANCE LTD., a company incorporated under the laws of Bermuda
(hereinafter referred to as "Ceding Company") and XL INSURANCE (BERMUDA) LTD, a
company incorporated under the laws of Bermuda, (hereinafter referred to as
"Reinsurer");

                WHEREAS, the Ceding Company and the Reinsurer entered into an
excess of loss reinsurance agreement effective October 1, 2001 ("XOL Agreement")
attached hereto as Exhibit A pursuant to which the Reinsurer agrees to indemnify
the Ceding Company for Losses paid, in an amount equal to the Liability Amount
for the first Determination Date and the XLI Incremental Liability Payment for
each Determination Date thereafter, in accordance with Article III thereof;
PROVIDED, HOWEVER, that the Reinsurer's aggregate indemnification obligations
under the XOL Agreement shall not exceed the Aggregate Limit of Liability;

                WHEREAS, the Reinsurer and the Ceding Company entered into a
letter agreement dated November 9, 2004 attached hereto as Exhibit B pursuant to
which the parties agreed to amend the definition of the Annual Reinsurance
Premium set forth in Article I, paragraph (B) thereto to reflect such amount as
would be payable by the Ceding Company to the Reinsurer if the XOL Agreement
were entered into with a third-party on an arm's-length basis and to use the
parties' best efforts to obtain the consent of Moody's to such amendment as
required by Article XX of the XOL Agreement; and

                WHEREAS, the Ceding Company and the Reinsurer wish to amend the
XOL Agreement to amend the definition of Annual Reinsurance Premium and certain
other provisions.

                Section 1. DEFINITIONS. Except as otherwise defined in this
Amendment No. 1, terms defined in the XOL Agreement are used herein as defined
therein.

                Section 2. AMENDMENTS. the XOL Agreement is hereby amended as
follows:

                2.01.   References in the XOL Agreement (including references to
        the XOL Agreement as amended hereby) to "this Agreement" (and indirect
        references such as "hereunder", "hereby", "herein" and "hereof") shall
        be deemed to be references to the XOL Agreement as amended hereby.

                2.02.   Article I(B) is hereby amended and restated in its
        entirety as follows:

        ""Annual Reinsurance Premium" shall mean the sum of $500,000 subject to
        adjustment as provided for in Section 6.4."

                2.03.   A new Section 5.3 is hereby added to Article V
        (Termination) to provide in its entirety as follows:

<PAGE>

        "5.3 Either party may terminate this Agreement at 12:01 am Eastern
        Standard Time on any anniversary date of the Effective Date of this
        Agreement by giving the other party and Moody's notice of such
        termination in accordance with Article XIX hereof at least ninety (90)
        days prior to such termination date."

                2.04.   A new Section 5.4 of hereby added to Article V
        (Termination) to provide in its entirety as follows:

        "5.4 Notwithstanding the foregoing, the Reinsurer shall have the right
        to terminate this Agreement at any time upon not less than thirty (30)
        days prior written or electronic notice to the Ceding Company upon the
        occurrence of either one or both of the following events:

        (i)     a "Ceding Company Change in Control" (as defined below), and

        (ii)    a downgrade of the Ceding Company's Standard & Poor's financial
        strength rating below AA or a downgrade of the Ceding Company's Moody's
        financial strength rating below Aa2.

For the purposes of this Agreement, a "Ceding Company Change in Control" will be
deemed to occur in the event that (i) the ownership in Security Capital
Assurance Ltd ("SCA"), by the Reinsurer or by the Reinsurer and its affiliates
falls below thirty-five percent (35%) or (ii) SCA's direct or indirect ownership
interest in the issued and outstanding shares of voting securities of the Ceding
Company falls below ninety-five percent (95%)."

                2.05.   The second sentence of Section 6.3 is hereby deleted and
        restated in its entirety as follows:

        "The amount of such Annual Reinsurance Premium reimbursable hereunder
        shall be calculated by multiplying the then current Annual Reinsurance
        Premium, as may be amended from time to time pursuant to Section 6.4
        hereof, by a fraction, the numerator of which is 365 minus the number of
        days from the most recent anniversary of the Effective Date (or, if the
        Termination Date occurs prior to the first anniversary of the Effective
        Date, since the Effective Date) to the Termination Date, and the
        denominator of which is 365."

                2.06.   A new Section 6.4 is hereby added to Article VI
        (Premium; Accounts) to provide in its entirety as follows:

        "6.4 On an annual basis, effective as of any anniversary date of the
        Effective Date of this Agreement, the Reinsurer may adjust the Annual
        Reinsurance Premium for the succeeding twelve month period. The
        Reinsurer shall give the Ceding Company notice of such adjustment in
        accordance with Article XIX hereof at least one hundred twenty (120)
        days prior to the anniversary date of the Effective Date of this
        Agreement at which such premium adjustment shall become effective. The
        Reinsurer, if requested by the Ceding Company, shall provide the Ceding
        Company with support for its calculation of any adjustment to the
        Reinsurance Premium and shall discuss such calculation with the Ceding
        Company."

                                      -2-
<PAGE>

                Section 3. CONDITIONS PRECEDENT. The amendment to the XOL
Agreement set forth in Section 2 above shall become effective, as of the date
hereof, upon the satisfaction of the following condition precedent:

                3.01.   MOODY'S CONSENT. Pursuant to Article XX of the XOL
        Agreement and with respect to this Amendment No. 1, the parties shall
        have obtained the prior written consent of Moody's.

                3.02.   EXECUTION. This Amendment No. 1 shall have been executed
        and delivered by each of the Ceding Company and the Reinsurer.

                Section 4. MISCELLANEOUS. Except as herein provided, the XOL
Agreement shall remain unchanged and in full force and effect. This Amendment
No. 1 may be executed in any number of counterparts, all of which taken together
shall constitute one and the same amendatory instrument and any of the parties
hereto may execute this Amendment No. 1 by signing any such counterpart. This
Amendment No. 1 shall be governed by, and construed in accordance with, the laws
of Bermuda.

                                      -3-
<PAGE>

The parties hereto have caused this Amendment No. 1 to be duly executed and
delivered as of the day and year first above written.

SIGNED for and on behalf of
XL INSURANCE (BERMUDA) LTD

By: /s/ Stanley Lee
Name: Stanley Lee
Title: SVP, Chief Financial Officer

SIGNED for and on behalf of
XL FINANCIAL ASSURANCE LTD.

By: /s/ Michael Rego
Name: Michael Rego
Title: Chief Operating Officer

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00110-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00110-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00110-of-00352.parquet"}]]