ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT
This
      is
      an Assignment, Assumption and Recognition Agreement (this “AAR
      Agreement”)
      made
      as of July 31, 2007, among HSBC Bank USA, National Association (the
“Assignor”),
      HSI
      Asset Securitization Corporation (the “Depositor”),
      Countrywide Home Loans Servicing LP (the “Servicer”)
      and
      Countrywide Home Loans, Inc. (the “Company”),
      ▇▇▇▇▇
      Fargo Bank, N.A., as master servicer (in such capacity, the “Master
      Servicer”)
      and
      Deutsche Bank National Trust Company, not individually but solely as trustee
      on
      behalf of the HSI
      Asset
      Loan Obligation Trust 2007-AR2 (the “Assignee”).
    In
      consideration of the mutual promises contained herein the parties hereto agree
      that the residential mortgage loans (the “Assigned
      Loans”)
      listed
      on Exhibit 1 annexed hereto (the “Assigned Loan Schedule”) purchased by Assignor
      from Company pursuant to (a) the Master Mortgage Loan Purchase Agreement, dated
      as of September 1, 2006, between Assignor and Company (the “Purchase
      Agreement”)
      and
      (b) that certain Servicing Agreement, dated as of September 1, 2006, between
      the
      Assignor and the Company, as amended by that certain Amendment Reg AB dated
      as
      of September 1, 2006 (the “Servicing
      Agreement”)
      ((a)
      and (b) shall collectively be referred to herein as the “Purchase
      and Servicing Agreements”),
      shall
      be subject to the terms of this AAR Agreement. Capitalized terms used herein
      but
      not defined shall have the meanings ascribed to them in the Purchase Agreement
      or Servicing Agreement, as applicable.
    The
      Servicer shall service the Assigned Loans in accordance with the Servicing
      Agreement as modified by this AAR Agreement.
    Assignment
      and Assumption 
    1. Assignor
      hereby grants, transfers and assigns to the Depositor all of the right, title,
      interest and obligations of Assignor in the Assigned Loans and, as they relate
      to the Assigned Loans, all of its right, title, interest and obligations in,
      to
      and under the Purchase and Servicing Agreements and the Depositor hereby assumes
      all rights and obligations with respect to the Assigned Loans under the Purchase
      and Servicing Agreements. Assignor specifically reserves and does not assign
      to
      the Depositor any right title and interest in, to or under any Mortgage Loans
      subject to the Purchase and Servicing Agreements other than those set forth
      on
      Exhibit l.
    Recognition
      of the Assignee and Assumption by the Assignee
    2. From
      and
      after the date hereof, each of the Servicer and the Company shall and does
      hereby recognize that the Depositor will transfer the Assigned Loans and assign
      its rights and obligations under the Purchase and Servicing Agreements (solely
      to the extent set forth herein) and this AAR Agreement to the Assignee pursuant
      to a Pooling and Servicing Agreement, dated as of July 1, 2007 (the “Pooling
      Agreement”), among the Depositor, Deutsche Bank National Trust Company, as
      trustee (the “Trustee”) (including its successors in interest and any successor
      trustees under the Pooling Agreement), the Master Servicer, ▇▇▇▇▇ Fargo Bank,
      N.A., as securities administrator (the “Securities Administrator”) and ▇▇▇▇▇
      Fargo Bank, N.A., as custodian. The Assignee acknowledges that all such rights
      and obligations (insofar as such obligations relate to (1) the covenants of
      the
      Purchaser under the Purchase and Servicing Agreements with respect to the
      Assigned Loans and (2) the obligations of the Purchaser under Section 5.01
      of
      the Servicing Agreement with respect to the Assigned Loans) are hereby assumed
      by the Assignee. The Servicer hereby acknowledges and agrees that from and
      after
      the date hereof (i) the Assignee will be the owner of the Assigned Loans,
      (ii) the Servicer shall look solely to the Assignee for performance of any
      obligations of the Assignor insofar as they relate to (1) the covenants of
      the
      Purchaser under the Purchase and Servicing Agreements with respect to the
      Assigned Loans and (2) the obligations of the Purchaser under Section 5.01
      of
      the Servicing Agreement with respect to the Assigned Loans, (iii) the
      Assignee shall have all the rights and remedies available to the Assignor,
      insofar as they relate to the Assigned Loans, under the Purchase and Servicing
      Agreements, including, without limitation, the enforcement of the document
      delivery requirements and remedies with respect to breaches of representations
      and warranties set forth in the Purchase Agreement or Servicing Agreement,
      as
      applicable, and shall be entitled to enforce all of the obligations of the
      Company and the Servicer thereunder insofar as they relate to the Assigned
      Loans, and (iv) all references to the Purchaser (insofar as they relate to
      the rights, title and interest and, with respect to obligations of the
      Purchaser, only insofar as they relate to (1) the covenants of the Purchaser
      under the Purchase and Servicing Agreements with respect to the Assigned Loans
      and (2) the obligations of the Purchaser under Section 5.01 of the Servicing
      Agreement) under the Purchase and Servicing Agreements insofar as they relate
      to
      the Assigned Loans, shall be deemed to refer to the Assignee. None of the
      Servicer, the Company nor the Assignor shall amend or agree to amend, modify,
      waiver, or otherwise alter any of the terms or provisions of the Purchase and
      Servicing Agreements which amendment, modification, waiver or other alteration
      would in any way affect the Assigned Loans or the Servicer’s performance under
      the Servicing Agreement with respect to the Assigned Loans without the prior
      written consent of the Assignee. The Servicer hereby acknowledges that ▇▇▇▇▇
      Fargo Bank, N.A. has been appointed as the Master Servicer of the Assigned
      Loans
      pursuant to this AAR Agreement and therefore has the right to enforce all
      obligations of the Servicer, as they relate to the Assigned Loans, under the
      Servicing Agreement and this AAR Agreement. Notwithstanding the foregoing,
      it
      is
      understood that the Servicer shall not be obligated to defend, indemnify and
      hold harmless the Master Servicer, the Securities Administrator, the Assignee,
      the Assignor and the Depositor against any losses, damages, penalties, fines,
      forfeitures, judgments and any related costs including, without limitation,
      reasonable and necessary legal fees, solely and directly resulting from (i)
      actions or inactions of the Servicer which were taken or omitted upon the
      instruction or direction of the Master Servicer, the Securities Administrator,
      the Assignee, as applicable, or (ii) the failure of the Master Servicer, the
      Securities Administrator or the Trustee, as applicable, to perform the
      obligations of the Assignee with respect to this AAR Agreement, or as the
“Owner” or “Purchaser” with respect to the servicing provisions of the Servicing
      Agreement.
    (Countrywide
        Home Loans, Inc.)
    1
        Representations;
      Warranties and Covenants 
    3. Assignor
      warrants and represents to the Depositor, the Servicer, the Company and the
      Assignee as of the date hereof: 
    | 
               a. 
             | 
            
               Attached
                hereto as Exhibit 2 is a true and accurate copy of the Servicing
                Agreement, which agreement is in full force and effect as of the
                date
                hereof and the provisions of which have not been waived, amended
                or
                modified in any respect, nor has any notice of termination been given
                thereunder;  
             | 
          
(Countrywide
          Home Loans, Inc.)
      2
        | 
               b. 
             | 
            
               Assignor
                is the lawful owner of the Assigned Loans with full right to transfer
                the
                Assigned Loans and any and all of its interests, rights and obligations
                under the Purchase and Servicing Agreement as they relate to the
                Assigned
                Loans, free and clear of any and all liens, claims and encumbrances;
                and
                upon the transfer of the Assigned Loans to Assignee as contemplated
                herein, Assignee shall have good title to each and every Assigned
                Loan, as
                well as any and all of Assignor's interests, rights and obligations
                under
                the Purchase and Servicing Agreements as they relate to the Assigned
                Loans, free and clear of any and all liens, claims and encumbrances;
                 
             | 
          
| 
               c. 
             | 
            
               Assignor
                has not received notice of, and has no knowledge of, any offsets,
                counterclaims or other defenses available to the Servicer or the
                Company
                with respect to the Assigned Loans or the Purchase and Servicing
                Agreements;  
             | 
          
| 
               d. 
             | 
            
               Assignor
                is a corporation duly organized, validly existing and in good standing
                under the laws of the jurisdiction of its formation, and has all
                requisite
                power and authority to acquire, own and sell the Assigned Loans;
                 
             | 
          
| 
               e. 
             | 
            
               Assignor
                has full power and authority to execute, deliver and perform its
                obligations under this AAR Agreement, and to consummate the transactions
                set forth herein. The consummation of the transactions contemplated
                by
                this AAR Agreement is in the ordinary course of Assignor's business
                and
                will not conflict with, or result in a breach of, any of the terms,
                conditions or provisions of Assignor's charter or by-laws or any
                legal
                restriction, or any material agreement or instrument to which Assignor
                is
                now a party or by which it is bound, or result in the violation of
                any
                law, rule, regulation, order, judgment or decree to which Assignor
                or its
                property is subject. The execution, delivery and performance by Assignor
                of this AAR Agreement and the consummation by it of the transactions
                contemplated hereby, have been duly authorized by all necessary action
                on
                the part of Assignor. This AAR Agreement has been duly executed and
                delivered by Assignor and, upon the due authorization, execution
                and
                delivery by Assignee and the parties hereto, will constitute the
                valid and
                legally binding obligation of Assignor enforceable against Assignor
                in
                accordance with its terms except as enforceability may be limited
                by
                bankruptcy, reorganization, insolvency, moratorium or other similar
                laws
                now or hereafter in effect relating to creditors' rights generally,
                and by
                general principles of equity regardless of whether enforceability
                is
                considered in a proceeding in equity or at law;
 
             | 
          
(Countrywide
          Home Loans, Inc.)
      3
        | 
               f. 
             | 
            
               No
                material consent, approval, order or authorization of, or declaration,
                filing or registration with, any governmental entity is required
                to be
                obtained or made by Assignor in connection with the execution, delivery
                or
                performance by Assignor of this AAR Agreement, or the consummation
                by it
                of the transactions contemplated hereby; and
 
             | 
          
| 
               g. 
             | 
            
               There
                is no action, suit, proceeding, investigation or litigation pending
                or, to
                Assignor's knowledge, threatened, which either in any instance or
                in the
                aggregate, if determined adversely to Assignor, would adversely affect
                Assignor's execution or delivery of, or the enforceability of, this
                AAR
                Agreement, or the Assignor's ability to perform its obligations under
                this
                AAR Agreement. 
             | 
          
4. Assignee
      warrants and represents to, and covenants with, Assignor, the Depositor, the
      Servicer and the Company as of the date hereof: 
    | 
               a. 
             | 
            
               Decision
                to Purchase.
                The Assignee is a sophisticated investor able to evaluate the risks
                and
                merits of the transactions contemplated hereby, and that it has not
                relied
                in connection therewith upon any statements or representations of
                the
                Assignor or the Servicer other than those contained in the Servicing
                Agreement or this AAR Agreement. 
             | 
          
| 
               b. 
             | 
            
               Authority.
                The Assignee is duly and legally authorized to enter into this AAR
                Agreement and to perform its obligations hereunder and under the
                Servicing
                Agreement.  
             | 
          
| 
               c. 
             | 
            
               Enforceability.
                This AAR Agreement has been duly authorized, executed and delivered
                by the
                Assignee and (assuming due authorization, execution and delivery
                thereof
                by each of the other parties hereto) constitutes its legal, valid
                and
                binding obligation, enforceable in accordance with its terms, except
                as
                such enforcement may be limited by bankruptcy, insolvency, reorganization
                or other similar laws affecting the enforcement of creditors’ rights
                generally and by general equitable principles (regardless of whether
                such
                enforcement is considered in a proceeding in equity or at
                law). 
             | 
          
5. Each
      of
      the Servicer and the Company, as applicable, warrants and represents to, and
      covenants with, the Assignor and the Assignee as of the date hereof:
    | 
               a. 
             | 
            
               The
                Purchase and Servicing Agreement is in full force and effect as of
                the
                date hereof and the provisions of which have not been waived, amended
                or
                modified in any respect, nor has any notice of termination been given
                thereunder, except as contemplated herein;
 
             | 
          
| 
               b. 
             | 
            
               Each
                of the Servicer and the Company is duly organized, validly existing
                and in
                good standing under the laws of the jurisdiction of its formation
                or
                incorporation, as the case may be, and has all requisite power and
                authority to perform its obligations under the Purchase and Servicing
                Agreements;  
             | 
          
(Countrywide
          Home Loans, Inc.)
      4
        | 
               c. 
             | 
            
               Each
                of the Servicer and the Company has full corporate or limited partnership,
                as applicable, power and authority to execute, deliver and perform
                its
                obligations under this AAR Agreement, and to consummate the transactions
                set forth herein. The consummation of the transactions contemplated
                by
                this AAR Agreement is in the ordinary course of each of the Servicer’s and
                the Company’s business and will not conflict with, or result in a breach
                of, any of the terms, conditions or provisions of the Servicer’s or the
                Company’s organizational documentation or any legal restriction, or any
                material agreement or instrument to which the Servicer or the Company
                is
                now a party or by which it is bound, or result in the violation of
                any
                law, rule, regulation, order, judgment or decree to which the Servicer
                or
                the Company or its property is subject, except in such case where
                the
                conflict, breach or violation would not have a material adverse effect
                on
                the Servicer or the Company or its ability to perform its obligations
                under this AAR Agreement. The execution, delivery and performance
                by the
                Servicer and the Company of this AAR Agreement and the consummation
                by it
                of the transactions contemplated hereby, have been duly authorized
                by all
                necessary corporate or limited partnership, as applicable, action
                on the
                part of the Servicer and the Company. This AAR Agreement has been
                duly
                executed and delivered by the Servicer and the Company, and, upon
                the due
                authorization, execution and delivery by Assignor and Assignee, will
                constitute the valid and legally binding obligation of the Servicer
                and
                the Company, enforceable against the Servicer and the Company in
                accordance with its terms except as enforceability may be limited
                by
                bankruptcy, reorganization, insolvency, moratorium or other similar
                laws
                now or hereafter in effect relating to creditors’ rights generally, and by
                general principles of equity regardless of whether enforceability
                is
                considered in a proceeding in equity or at law;
 
             | 
          
| 
               d. 
             | 
            
               No
                consent, approval, order or authorization of, or declaration, filing
                or
                registration with, any governmental entity is required to be obtained
                or
                made by the Servicer or the Company in connection with the execution,
                delivery or performance by the Servicer or the Company of this AAR
                Agreement, or the consummation by it of the transactions contemplated
                hereby;  
             | 
          
| 
               e. 
             | 
            
               There
                is no action, suit, proceeding, investigation or litigation pending
                or, to
                the Servicer’s or the Company’s knowledge, threatened, which either in any
                instance or in the aggregate, if determined adversely to the Servicer
                or
                the Company, would adversely affect the Servicer’s or the Company’s
                execution or delivery of, or the enforceability of, this AAR Agreement,
                or
                the Servicer’s or the Company’s ability to perform its obligations under
                this AAR Agreement;  
             | 
          
(Countrywide
          Home Loans, Inc.)
      5
        | 
               f. 
             | 
            
               The
                Company hereby represents and warrants, for the benefit of the Assignor
                and the Assignee, that the representations and warranties set forth
                in
                Section 3.01 of the Purchase Agreement, are true and correct in all
                material respects as of the date hereof, and the representations
                and
                warranties set forth in Section 3.02 of the Purchase Agreement are
                true
                and correct in all material respects as of the related Closing Date;
                and 
             | 
          
| 
               g. 
             | 
            
               The
                Servicer hereby represents and warrants, for the benefit of the Assignor
                and the Assignee, that the representations and warranties set forth
                in
                Section 2.01 of the Servicing Agreement, are true and correct in
                all
                material respects as of the date
                hereof. 
             | 
          
Amendment
      of the Servicing Agreement 
    6. In
      connection with the transfer of the Mortgage Loans hereunder, the Servicer
      agrees that, from and after the date hereof, each Mortgage Loan transferred
      hereunder will be subject to, and serviced under, the Servicing Agreement,
      provided that, solely with respect to the Mortgage Loans transferred hereunder,
      the following modifications shall be made:
    | 
               a. 
             | 
            
               The
                definition of “Business Day” in Section 1 is hereby amended in its
                entirety to read as follows: 
             | 
          
Business
      Day: Any day other than a Saturday or Sunday, or a day on which banks and
      savings and loan institutions in California, Maryland, Massachusetts, Minnesota,
      New York or Texas are authorized or obligated by law or executive order to
      be
      closed.
    | 
               b. 
             | 
            
               The
                definition of “Eligible Account” in Section 1 is hereby amended in its
                entirety to read as follows: 
             | 
          
Eligible
      Account: (a) that is either (1) maintained by the Servicer with a federal or
      state chartered depository institution or trust company or with the Servicer,
      so
      long as such entity has a minimum short-term rating of “A-2” (or “BBB+” or above
      if it has no short-term rating) by S&P or (2) maintained with the corporate
      trust department of a federal depository institution or state-chartered
      depository institution subject to regulations regarding fiduciary funds on
      deposit similar to Title 12 of the U.S. Code of Federal Regulation Section
      9.10(b), which, in either case, has corporate trust powers and is acting in
      its
      fiduciary capacity; and (b) that is either (i) maintained with a depository
      institution the short term debt obligations of which are rated by a nationally
      recognized statistical rating agency in one of its two (2) highest rating
      categories at the time of any deposit therein, or (ii) maintained with an
      institution and in a manner acceptable to an Agency.
    (Countrywide
          Home Loans, Inc.)
      6
        | 
               c. 
             | 
            
               A
                new definition of “Permitted Investments” is hereby added to Article 1
                immediately following the definition of “Periodic Rate Cap” to read as
                follows: 
             | 
          
Permitted
      Investments: Any one or more of the following obligations or securities acquired
      at a purchase price of not greater than par, regardless of whether issued or
      managed by the Depositor, the Securities Administrator, the Assignee or any
      of
      their respective affiliates or for which an affiliate of the any of the
      foregoing serves as an advisor:
    (i) direct
      obligations of, or obligations fully guaranteed as to timely payment of
      principal and interest by, the United States or any agency or instrumentality
      thereof, provided such obligations are backed by the full faith and credit
      of
      the United States; 
    (ii) (A)
      such
      depository institution or trust company or its ultimate parent has a short-term
      uninsured debt rating in one of the two highest available rating categories
      of
      the Rating Agency and (B) any other demand or time deposit or deposit which
      is
      fully insured by the FDIC;
    (iii) repurchase
      obligations with respect to any security described in clause (i) above and
      entered into with a depository institution or trust company (acting as
      principal) rated A or higher by the Rating Agency;
    (iv) securities
      bearing interest or sold at a discount that are issued by any corporation
      incorporated under the laws of the United States of America, the District of
      Columbia or any State thereof and that are rated by the Rating Agency in its
      highest long-term unsecured rating categories at the time of such investment
      or
      contractual commitment providing for such investment;
    (v) commercial
      paper (including both non-interest-bearing discount obligations and
      interest-bearing obligations) that is rated by the Rating Agency in its highest
      short-term unsecured debt rating available at the time of such
      investment;
    (vi) units
      of
      money market funds (which may be 12b-1 funds, as contemplated by the Commission
      under the Investment Company Act of 1940) registered under the Investment
      Company Act of 1940 including funds managed or advised by the Assignee or an
      affiliate thereof having the highest applicable rating from the Rating Agency;
      
    (vii) if
      previously confirmed in writing to the Securities Administrator, any other
      demand, money market or time deposit, or any other obligation, security or
      investment, as may be acceptable to the Rating Agency in writing as a permitted
      investment of funds backing securities having ratings equivalent to its highest
      initial ratings of the senior certificates; and
    (Countrywide
          Home Loans, Inc.)
      7
        (viii) provided,
      however, that no instrument described hereunder shall evidence either the right
      to receive (a) only interest with respect to the obligations underlying such
      instrument or (b) both principal and interest payments derived from obligations
      underlying such instrument and the interest and principal payments with respect
      to such instrument provide a yield to maturity at par greater than 120% of
      the
      yield to maturity at par of the underlying obligations.
    | 
               d. 
             | 
            
               A
                new definition of “Rating Agency” is hereby added to Article 1 immediately
                following the definition of “Qualified Substitute Mortgage Loan” to read
                as follows: 
             | 
          
Rating
      Agency:
      Any
      nationally recognized statistical rating agency rating the securities issued
      in
      the applicable Pass-Through Transfer.
    | 
               e. 
             | 
            
               Section
                3.04 of the Servicing Agreement (Establishment of Custodial Accounts;
                Deposits in Custodial Accounts) is hereby amended as
                follows: 
             | 
          
| 
               (i) 
             | 
            
               by
                adding the words “, entitled ‘in trust for the Trustee on behalf of the
                HSI Asset Loan Obligation Trust 2007-AR2 Trust’” at the end of the first
                sentence of the first paragraph; 
             | 
          
| 
               (ii) 
             | 
            
               by
                adding the following sentence to the end of the first paragraph;
“In the
                event of a downgrade of the Eligible Account’s short-term rating to less
                than “A-2” (or BBB+ if the institution has no short-term rating) by
                S&P which would result in the reduction or withdrawal of their then
                current ratings of the certificates, the Custodial Account should
                promptly
                (and in any case within not more than 30 calendar days) be moved
                to
                another Eligible Account.” 
             | 
          
| 
               (iii) 
             | 
            
               by
                adding a new paragraph at the end of the section to read as
                follows: 
             | 
          
“Funds
      in
      the Custodial Account shall, if invested, be invested in Permitted Investments;
      provided, however, that the Servicer shall be under no obligation or duty to
      invest (or otherwise pay interest on) amounts held in the Custodial Account.
      All
      Permitted Investments shall mature or be subject to redemption or withdrawal
      no
      later than one Business Day prior to the next succeeding Remittance Date (except
      that if such Permitted Investment is an obligation of the Servicer,
      then
      such Permitted Investment shall mature not later than such applicable Remittance
      Date). Any and all investment earnings from any such Permitted Investment shall
      be for the benefit of the Servicer and shall be subject to its withdrawal or
      order from time to time, and shall not be part of the Trust. The risk of loss
      of
      moneys required to be remitted to the Securities Administrator resulting from
      such investments shall be borne by and be the risk of the Servicer. The Servicer
      shall deposit the amount of any such loss in the Custodial Account immediately
      as realized, but in no event later than the related Remittance
      Date.”
    (Countrywide
          Home Loans, Inc.)
      8
        | 
               f. 
             | 
            
               Section
                3.06 of the Servicing Agreement (Establishment of Escrow Accounts;
                Deposits in Escrow Accounts) is hereby amended as
                follows: 
             | 
          
(i) by
      adding
      the words “, entitled ‘in trust for the Trustee on behalf of the HSI Asset Loan
      Obligation Trust 2007-AR2 Trust and for the benefit of the certificateholders’”
after the phrase “demand accounts” in the fourth line of the first
      paragraph;
    | 
               g. 
             | 
            
               Section
                3.08 is hereby amended by replacing each reference to “the Purchaser” with
                “the Master Servicer.” 
             | 
          
| 
               h. 
             | 
            
               Sections
                4.04 and 4.05 are hereby deleted in their
                entirety. 
             | 
          
| 
               i. 
             | 
            
               Section
                5.04 (Countrywide Not to Resign) is hereby amended by replacing each
                reference to “the Purchaser” with “the Master
                Servicer.” 
             | 
          
j. Section
      6.01 (Termination Due to an Event of Default) is hereby amended by replacing
      each reference to “the Purchaser” with “the Master Servicer.” 
    | 
               k. 
             | 
            
               Section
                6.01(a)(i) is hereby amended to replace the reference to “two (2) Business
                Day” with “one (1) Business Day.” 
             | 
          
| 
               l. 
             | 
            
               Section
                7.13 (Successor to Countrywide) is hereby amended by adding the following
                proviso at the end of the second sentence of the first paragraph
                immediately before the period to read as
                follows: 
             | 
          
;
      provided,
      however,
      that no
      such compensation shall be in excess of that permitted the Servicer under this
      Agreement.  
    | 
               m. 
             | 
            
               A
                new Section 7.14 (Amendment) is hereby added to the Servicing Agreement
                to
                read as follows: 
             | 
          
SECTION
      7.14. Amendment.
      This
      Agreement may be amended but only to the extent such amendment affects the
      Mortgage Loans by written agreement signed by the Seller, the Assignee and
      the
      Master Servicer (in furtherance of the Master Servicer’s rights, duties and
      obligations as Master Servicer for the Trust). In respect of any such amendment,
      the Assignee and the Master Servicer agree to be bound by the requirements
      for
      entering into such amendment provided in Section 12.01 of the pooling and
      servicing agreement, including the delivery of any opinion of counsel required
      therein.
    Assignment,
          Assumption and Recognition Agreement
        (Countrywide
          Home Loans, Inc.)
      9
        | 
               n. 
             | 
            
               Section
                2(g) of Amendment Reg AB is hereby amended by adding the following
                subpart: 
             | 
          
(vi) The
      Master Servicer shall be considered a third-party beneficiary of 2(d), 2(e)
      and
      2(g) of this Amendment Reg AB (with regard to Section 2(g), solely with respect
      to noncompliance under 2(d) and 2(e) of this Amendment Reg AB), entitled to
      all
      the rights and benefits hereof as if it were a direct party to this
      Agreement
    7. Pursuant
      to Section 4.02(a) of the Servicing Agreement, the Servicer shall furnish to
      the
      Master Servicer (i)(a) monthly loan data in a mutually agreed-upon format,
      (b)
      default loan data in a mutually agreed-upon format and (c) information regarding
      the realized losses and gains in a mutually agreed-upon format, (ii) all such
      information required pursuant to clause (i)(a) above on a magnetic tape,
      electronic mail, or other similar media reasonably acceptable to the Master
      Servicer and the Servicer, and (iii) all supporting documentation reasonably
      necessary and available with respect to the information required above.
      Notwithstanding the foregoing, the Servicer is not required to report data
      relating to prepayment charges or penalties to the extent such prepayment
      charges or penalties are retained by the Servicer.
    8. All
      remittances required to be made by the Servicer to the Purchaser under the
      Servicing Agreement shall be made to the Securities Administrator by wire
      transfer to the following account, or to such other account as may be specified
      by the Securities Administrator from time to time:
    ▇▇▇▇▇
      Fargo Bank, N.A.
    San
      Francisco, California
    ABA
      #
      ▇▇▇-▇▇▇-▇▇▇
    Acct.
      #
      ▇▇▇▇▇▇▇▇▇▇
    Acct.
      Name: SAS Clearing
    FFC:
      53168200 -- HALO 2007-AR2 Distribution Account
    9. The
      Company hereby acknowledges and agrees that the remedies available to the
      Assignor and the Assignee in connection with any breach of the representations
      and warranties made by the Company set forth in Section 5(f) hereof shall be
      as
      set forth in Subsection 3.03 of the Purchase Agreement as if they were set
      forth
      herein (including without limitation the repurchase and indemnity obligations
      set forth therein).
    10. Notwithstanding
      any term hereof to the contrary, the execution and delivery of this AAR
      Agreement by the Trustee is solely in its capacity as trustee for the HSI Asset
      Loan Obligation Trust 2007-AR2 (“the Trust”) and not individually, and any
      recourse against the Trustee in respect of any obligations it may have under
      or
      pursuant to the terms of this AAR Agreement shall be limited solely to the
      assets it may hold as trustee of the Trust. It is expressly understood and
      agreed by the parties hereto that (i) this AAR Agreement is executed and
      delivered by the Trustee, not individually or personally but solely as trustee
      on behalf of the Trust, in the exercise of the powers and authority conferred
      and vested in it, (ii) each of the representations, undertakings and agreements
      by the Assignee is made and intended for the purpose of binding only the Trust,
      (iii) nothing herein contained shall be construed as creating any liability
      on
      the part of the Trustee, individually or personally, to perform any covenant
      (either express or implied) contained herein, and all such liability, if any,
      is
      hereby expressly waived by the parties hereto, and such waiver shall bind any
      third party making a claim by or through one of the parties hereto, and (iv)
      under no circumstances shall the Trustee be personally liable for the payment
      of
      any indebtedness or expenses of the Trust (including, but not limited to, any
      amounts to be paid under the Purchase and Servicing Agreements), or be liable
      for the breach or failure of any obligation, representation, warranty or
      covenant made or undertaken by the Trust under this AAR Agreement, the Pooling
      Agreement or any related document.
    Assignment,
          Assumption and Recognition Agreement
        (Countrywide
          Home Loans, Inc.)
      10
        Miscellaneous 
    11. All
      demands, notices and communications related to the Assigned Loans, the Purchase
      and Servicing Agreements and this AAR Agreement shall be in writing and shall
      be
      deemed to have been duly given if personally delivered or mailed by registered
      mail, postage prepaid, as follows: 
    | 
                 a. 
               | 
              
                 In
                  the case of Company, 
               | 
            ||
| 
                 Countrywide
                  Home Loans, Inc. 
               | 
            |||
| 
                 ▇▇▇▇
                  ▇▇▇▇ ▇▇▇▇▇▇▇ 
               | 
            |||
| 
                 ▇▇▇▇▇▇▇▇▇,
                  ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 Attn:
                  ▇▇▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 b. 
               | 
              
                 In
                  the case of the Servicer, 
               | 
            ||
| 
                 Countrywide
                  Home Loans Servicing LP 
               | 
            |||
| 
                 ▇▇▇
                  ▇▇▇▇▇▇▇▇▇▇▇ ▇▇▇ 
               | 
            |||
| 
                 ▇▇▇▇
                  ▇▇▇▇▇▇, ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 Attn:
                  ▇▇▇▇ ▇▇▇▇▇▇▇▇ and ▇▇▇▇▇▇ ▇▇▇▇ 
               | 
            |||
| 
                 c. 
               | 
              
                 In
                  the case of Assignor, 
               | 
            ||
| 
                 HSBC
                  Bank USA, National Association 
               | 
            |||
| 
                 Re:
                  HALO 2007-AR2 
               | 
            |||
| 
                 ▇▇▇
                  ▇▇▇▇▇ ▇▇▇▇▇▇ 
               | 
            |||
| 
                 ▇▇▇
                  ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 Attention:
                  ABS/MBS Structured Finance 
               | 
            |||
| 
                 d. 
               | 
              
                 In
                  the case of Depositor, 
               | 
            ||
| 
                 Re:
                  HALO 2007-AR2 
               | 
            |||
| 
                 ▇▇▇
                  ▇▇▇▇▇ ▇▇▇▇▇▇, ▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 ▇▇▇
                  ▇▇▇▇, ▇▇▇ ▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 Attention:
                  ABS/MBS Structured Finance 
               | 
            
Assignment,
            Assumption and Recognition Agreement
          (Countrywide
            Home Loans, Inc.)
        11
          | 
                 e. 
               | 
              
                 In
                  the case of the Trustee, 
               | 
            ||
| 
                 Deutsche
                  Bank National Trust Company 
               | 
            |||
| 
                 ▇▇▇▇
                  ▇▇▇▇ ▇▇. ▇▇▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 ▇▇▇▇▇
                  ▇▇▇, ▇▇▇▇▇▇▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 Attention:
                  Trust Administration - HB07L2 
               | 
            |||
| 
                 Telephone:
                  (▇▇▇) ▇▇▇-▇▇▇▇ 
               | 
            |||
| 
                 Facsimile:
                  (▇▇▇) ▇▇▇-▇▇▇▇ 
               | 
            |||
| 
                 f. 
               | 
              
                 In
                  the case of the Master Servicer, 
               | 
            ||
| 
                 ▇▇▇▇▇
                  Fargo Bank, N.A. 
               | 
            |||
| 
                 ▇▇▇▇
                  ▇▇▇ ▇▇▇▇▇▇▇▇▇ ▇▇▇▇, 
               | 
            |||
| 
                 ▇▇▇▇▇▇▇▇,
                  ▇▇▇▇▇▇▇▇ ▇▇▇▇▇ 
               | 
            |||
| 
                 Attention:
                  Client Manager - HALO
                  2007-AR2 
               | 
            
12. This
      AAR
      Agreement shall be construed in accordance with the laws of the State of New
      York, without regard to conflicts of law principles, and the obligations, rights
      and remedies of the parties hereunder shall be determined in accordance with
      such laws. 
    13. No
      term
      or provision of this AAR Agreement may be waived or modified unless such waiver
      or modification is in writing and signed by the party against whom such waiver
      or modification is sought to be enforced. 
    14. This
      AAR
      Agreement shall inure to the benefit of the successors and assigns of the
      parties hereto. Any entity into which Assignor, Assignee, Depositor, Servicer
      or
      Company may be merged or consolidated shall without the requirement for any
      further writing, be deemed Assignor, Assignee, Depositor, Servicer or Company,
      respectively hereunder. 
    15. This
      AAR
      Agreement shall survive the conveyance of the Assigned Loans as contemplated
      in
      this AAR Agreement. 
    16. This
      AAR
      Agreement may be executed simultaneously in any number of counterparts. Each
      counterpart shall be deemed to be an original and all such counterparts shall
      constitute one and the same instrument. 
    17. In
      the
      event that any provision of this AAR Agreement conflicts with any provision
      of
      the Purchase and Servicing Agreements with respect to the Assigned Loans, the
      terms of this AAR Agreement shall control. 
    Assignment,
          Assumption and Recognition Agreement
        (Countrywide
          Home Loans, Inc.)
      12
        IN
      WITNESS WHEREOF,
      the
      parties hereto have executed this AAR Agreement as of the day and year first
      above written.
    | 
               HSBC
                BANK USA, NATIONAL ASSOCIATION, 
              as
                Assignor  
             | 
            |||
| 
               By:
                /s/ ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ 
             | 
            |||
| 
               Name:
                ▇▇▇▇▇▇▇ ▇▇▇▇▇▇ 
             | 
            |||
| 
               Title:
                Officer #15568 
             | 
            
| 
               HSI
                ASSET SECURITIZATION CORPORATION, as
                Depositor  
             | 
            |||
| 
               By:
                /s/ ▇▇▇▇▇▇ ▇▇▇▇▇       
             | 
            |||
| 
               | 
            |||
| Title: Vice President | 
| 
               COUNTRYWIDE
                HOME LOANS, INC., 
              as
                Company 
             | 
            |||
| 
               By:
                /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇  
             | 
            |||
| 
               Name:
                ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇ 
             | 
            |||
| 
               Title:
                Senior Vice President 
             | 
            
| 
               COUNTRYWIDE
                HOME LOANS SERVICING LP 
             | 
            |||
| 
               By:
                Countrywide GP, Inc., its General Partner 
             | 
            |||
| 
               Servicer 
             | 
            |||
| 
               By:
                /s/ ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇       
             | 
            |||
| 
               Name: 
                ▇▇▇▇▇▇ ▇▇▇▇▇▇▇▇▇       
             | 
            |||
| 
               Title:
                Snior Vice President 
             | 
            
Assignment,
          Assumption and Recognition Agreement
        (Countrywide
          Home Loans, Inc
      | 
               DEUTSCHE
                BANK NATIONAL TRUST COMPANY, 
              as
                Trustee 
             | 
            |||
| 
               By:
                /s/
                ▇▇▇▇▇▇▇ ▇▇▇▇▇ 
             | 
            |||
| 
               Name:
                ▇▇▇▇▇▇▇ ▇▇▇▇▇ 
             | 
            |||
| 
               Title:
                Vice President 
             | 
            
| 
               ▇▇▇▇▇
                FARGO BANK, N.A., 
              as
                Master Servicer  
             | 
            |||
| 
               By:
                /s/
                ▇▇▇▇▇▇ ▇▇▇▇ 
             | 
            |||
| 
               Name:
                ▇▇▇▇▇▇ ▇▇▇▇ 
             | 
            |||
| 
               Title:
                Vice President 
             | 
            
Assignment,
        Assumption and Recognition Agreement
      (Countrywide
        Home Loans, Inc.)
    EXHIBIT
      l
    ASSIGNED
      LOAN SCHEDULE
    On
      file
      with HSBC.
    EXHIBIT
      2
    SERVICING
      AGREEMENT
    On
      file
      with HSBC.